* [PATCH v2 1/2] drivers/mfd: Add realtek pcie card reader driver
2012-08-14 10:40 [PATCH v2 0/2] Add modules to support realtek PCIE card reader wei_wang
@ 2012-08-14 10:40 ` wei_wang
2012-08-15 6:40 ` Arnd Bergmann
2012-08-14 10:40 ` [PATCH v2 2/2] drivers/mmc: Add realtek pcie sdmmc host driver wei_wang
2012-08-14 15:05 ` [PATCH v2 0/2] Add modules to support realtek PCIE card reader Borislav Petkov
2 siblings, 1 reply; 7+ messages in thread
From: wei_wang @ 2012-08-14 10:40 UTC (permalink / raw)
To: gregkh, devel, linux-kernel, linux-mmc, cjb, arnd, sameo; +Cc: bp, Wei WANG
From: Wei WANG <wei_wang@realsil.com.cn>
Realtek PCI-E card reader driver adapts requests from upper-level
sdmmc/memstick layer to the real physical card reader.
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/mfd/Kconfig | 9 +
drivers/mfd/Makefile | 4 +
drivers/mfd/rts5209.c | 102 +++
drivers/mfd/rts5229.c | 117 ++++
drivers/mfd/rtsx_pcr.c | 1464 +++++++++++++++++++++++++++++++++++++++
drivers/mfd/rtsx_pcr.h | 31 +
include/linux/mfd/rtsx_common.h | 47 ++
include/linux/mfd/rtsx_pci.h | 692 ++++++++++++++++++
8 files changed, 2466 insertions(+)
create mode 100644 drivers/mfd/rts5209.c
create mode 100644 drivers/mfd/rts5229.c
create mode 100644 drivers/mfd/rtsx_pcr.c
create mode 100644 drivers/mfd/rtsx_pcr.h
create mode 100644 include/linux/mfd/rtsx_common.h
create mode 100644 include/linux/mfd/rtsx_pci.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index d1facef..4c07a34 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -63,6 +63,15 @@ config MFD_SM501_GPIO
lines on the SM501. The platform data is used to supply the
base number for the first GPIO line to register.
+config MFD_RTSX_PCI
+ tristate "Support for Realtek PCI-E driver-based card reader"
+ depends on PCI
+ help
+ This supports for Realtek PCI-Express driver-based card reader including
+ rts5209, rts5229, etc. Realtek driver-based card reader supports access
+ to many types of memory cards, such as Memory Stick, Memory Stick Pro,
+ Secure Digital and MultiMediaCard.
+
config MFD_ASIC3
bool "Support for Compaq ASIC3"
depends on GENERIC_HARDIRQS && GPIOLIB && ARM
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 79dd22d..e8cdc7b 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -9,6 +9,9 @@ obj-$(CONFIG_MFD_88PM805) += 88pm805.o 88pm80x.o
obj-$(CONFIG_MFD_SM501) += sm501.o
obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o
+rtsx_pci-objs := rtsx_pcr.o rts5209.o rts5229.o
+obj-$(CONFIG_MFD_RTSX_PCI) += rtsx_pci.o
+
obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o
@@ -132,3 +135,4 @@ obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o
obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o
obj-$(CONFIG_MFD_ANATOP) += anatop-mfd.o
obj-$(CONFIG_MFD_LM3533) += lm3533-core.o lm3533-ctrlbank.o
+obj-$(CONFIG_MFD_RTSX_PCI) += rtsx_pci.o
diff --git a/drivers/mfd/rts5209.c b/drivers/mfd/rts5209.c
new file mode 100644
index 0000000..6e23568
--- /dev/null
+++ b/drivers/mfd/rts5209.c
@@ -0,0 +1,102 @@
+/* Driver for Realtek PCI-Express card reader
+ *
+ * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
+ */
+
+#include <linux/module.h>
+#include <linux/mfd/rtsx_pci.h>
+
+static u8 rts5209_get_ic_version(struct rtsx_pcr *pcr)
+{
+ u8 val;
+
+ val = rtsx_pci_readb(pcr, 0x1C);
+ return val & 0x0F;
+}
+
+static int rts5209_extra_init_hw(struct rtsx_pcr *pcr)
+{
+ return 0;
+}
+
+static int rts5209_optimize_phy(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_phy_register(pcr, 0x00, 0xB966);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5209_turn_on_led(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_register(pcr, 0xFD58, 0x01, 0x00);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5209_turn_off_led(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_register(pcr, 0xFD58, 0x01, 0x01);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5209_enable_auto_blink(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0xFF, 0x0D);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5209_disable_auto_blink(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0x08, 0x00);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+const struct pcr_ops rts5209_pcr_ops = {
+ .get_ic_version = rts5209_get_ic_version,
+ .extra_init_hw = rts5209_extra_init_hw,
+ .optimize_phy = rts5209_optimize_phy,
+ .turn_on_led = rts5209_turn_on_led,
+ .turn_off_led = rts5209_turn_off_led,
+ .enable_auto_blink = rts5209_enable_auto_blink,
+ .disable_auto_blink = rts5209_disable_auto_blink,
+};
diff --git a/drivers/mfd/rts5229.c b/drivers/mfd/rts5229.c
new file mode 100644
index 0000000..85fc8a2
--- /dev/null
+++ b/drivers/mfd/rts5229.c
@@ -0,0 +1,117 @@
+/* Driver for Realtek PCI-Express card reader
+ *
+ * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
+ */
+
+#include <linux/module.h>
+#include <linux/mfd/rtsx_pci.h>
+
+static u8 rts5229_get_ic_version(struct rtsx_pcr *pcr)
+{
+ u8 val;
+
+ rtsx_pci_read_register(pcr, 0xFE90, &val);
+ return val & 0x0F;
+}
+
+static int rts5229_extra_init_hw(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ rtsx_pci_init_cmd(pcr);
+
+ /* Switch LDO3318 source from DV33 to card_3v3 */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, 0xFE78, 0x03, 0x00);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, 0xFE78, 0x03, 0x01);
+ /* LED shine disabled, set initial shine cycle period */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, 0xFC1E, 0x0F, 0x02);
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5229_optimize_phy(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ /* Optimize RX sensitivity */
+ err = rtsx_pci_write_phy_register(pcr, 0x00, 0xBA42);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5229_turn_on_led(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_register(pcr, 0xFC1F, 0x02, 0x02);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5229_turn_off_led(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_register(pcr, 0xFC1F, 0x02, 0x00);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5229_enable_auto_blink(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_register(pcr, 0xFC1E, 0x08, 0x08);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int rts5229_disable_auto_blink(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_write_register(pcr, 0xFC1E, 0x08, 0x00);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+const struct pcr_ops rts5229_pcr_ops = {
+ .get_ic_version = rts5229_get_ic_version,
+ .extra_init_hw = rts5229_extra_init_hw,
+ .optimize_phy = rts5229_optimize_phy,
+ .turn_on_led = rts5229_turn_on_led,
+ .turn_off_led = rts5229_turn_off_led,
+ .enable_auto_blink = rts5229_enable_auto_blink,
+ .disable_auto_blink = rts5229_disable_auto_blink,
+};
diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
new file mode 100644
index 0000000..ce13dac
--- /dev/null
+++ b/drivers/mfd/rtsx_pcr.c
@@ -0,0 +1,1464 @@
+/* Driver for Realtek PCI-Express card reader
+ *
+ * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
+ */
+
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/highmem.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/idr.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/rtsx_pci.h>
+#include <asm/unaligned.h>
+
+#include "rtsx_pcr.h"
+
+static bool msi_en = true;
+module_param(msi_en, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(msi_en, "Enable MSI");
+
+static struct workqueue_struct *workqueue;
+static DEFINE_IDR(rtsx_pci_idr);
+static DEFINE_SPINLOCK(rtsx_pci_lock);
+
+static DEFINE_PCI_DEVICE_TABLE(rtsx_pci_ids) = {
+ { 0x10EC, 0x5209, PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_OTHERS << 16, 0xFF0000 },
+ { 0x10EC, 0x5229, PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_OTHERS << 16, 0xFF0000 },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, rtsx_pci_ids);
+
+void rtsx_pci_start_run(struct rtsx_pcr *pcr)
+{
+ /* If pci device removed, don't queue idle work any more */
+ if (pcr->remove_pci)
+ return;
+
+ if (pcr->state != PDEV_STAT_RUN) {
+ pcr->state = PDEV_STAT_RUN;
+ pcr->ops->enable_auto_blink(pcr);
+ }
+
+ mod_timer(&pcr->idle_timer, jiffies + msecs_to_jiffies(200));
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_start_run);
+
+int rtsx_pci_write_register(struct rtsx_pcr *pcr, u16 addr, u8 mask, u8 data)
+{
+ int i;
+ u32 val = 3 << 30;
+
+ val |= (u32)(addr & 0x3FFF) << 16;
+ val |= (u32)mask << 8;
+ val |= (u32)data;
+
+ rtsx_pci_writel(pcr, RTSX_HAIMR, val);
+
+ for (i = 0; i < MAX_RW_REG_CNT; i++) {
+ val = rtsx_pci_readl(pcr, RTSX_HAIMR);
+ if ((val & (1 << 31)) == 0) {
+ if (data != (u8)val)
+ return -EIO;
+ return 0;
+ }
+ }
+
+ return -ETIMEDOUT;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_write_register);
+
+int rtsx_pci_read_register(struct rtsx_pcr *pcr, u16 addr, u8 *data)
+{
+ u32 val = 2 << 30;
+ int i;
+
+ val |= (u32)(addr & 0x3FFF) << 16;
+ rtsx_pci_writel(pcr, RTSX_HAIMR, val);
+
+ for (i = 0; i < MAX_RW_REG_CNT; i++) {
+ val = rtsx_pci_readl(pcr, RTSX_HAIMR);
+ if ((val & (1 << 31)) == 0)
+ break;
+ }
+
+ if (i >= MAX_RW_REG_CNT)
+ return -ETIMEDOUT;
+
+ if (data)
+ *data = (u8)(val & 0xFF);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_read_register);
+
+int rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val)
+{
+ int err, i, finished = 0;
+ u8 tmp;
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYDATA0, 0xFF, (u8)val);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYDATA1, 0xFF, (u8)(val >> 8));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYADDR, 0xFF, addr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYRWCTL, 0xFF, 0x81);
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ for (i = 0; i < 100000; i++) {
+ err = rtsx_pci_read_register(pcr, PHYRWCTL, &tmp);
+ if (err < 0)
+ return err;
+
+ if (!(tmp & 0x80)) {
+ finished = 1;
+ break;
+ }
+ }
+
+ if (!finished)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_write_phy_register);
+
+int rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val)
+{
+ int err, i, finished = 0;
+ u16 data = 0;
+ u8 *ptr, tmp;
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYADDR, 0xFF, addr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PHYRWCTL, 0xFF, 0x80);
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ for (i = 0; i < 100000; i++) {
+ err = rtsx_pci_read_register(pcr, PHYRWCTL, &tmp);
+ if (err < 0)
+ return err;
+
+ if (!(tmp & 0x80)) {
+ finished = 1;
+ break;
+ }
+ }
+
+ if (!finished)
+ return -ETIMEDOUT;
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, PHYDATA0, 0, 0);
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, PHYDATA1, 0, 0);
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ ptr = rtsx_pci_get_cmd_data(pcr);
+ data = ((u16)ptr[1] << 8) | ptr[0];
+
+ if (val)
+ *val = data;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_read_phy_register);
+
+void rtsx_pci_stop_cmd(struct rtsx_pcr *pcr)
+{
+ rtsx_pci_writel(pcr, RTSX_HCBCTLR, STOP_CMD);
+ rtsx_pci_writel(pcr, RTSX_HDBCTLR, STOP_DMA);
+
+ rtsx_pci_write_register(pcr, DMACTL, 0x80, 0x80);
+ rtsx_pci_write_register(pcr, RBCTL, 0x80, 0x80);
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_stop_cmd);
+
+void rtsx_pci_add_cmd(struct rtsx_pcr *pcr,
+ u8 cmd_type, u16 reg_addr, u8 mask, u8 data)
+{
+ unsigned long flags;
+ u32 val = 0;
+ u32 *ptr = (u32 *)(pcr->host_cmds_ptr);
+
+ val |= (u32)(cmd_type & 0x03) << 30;
+ val |= (u32)(reg_addr & 0x3FFF) << 16;
+ val |= (u32)mask << 8;
+ val |= (u32)data;
+
+ spin_lock_irqsave(&pcr->lock, flags);
+ ptr += pcr->ci;
+ if (pcr->ci < (HOST_CMDS_BUF_LEN / 4)) {
+ put_unaligned_le32(val, ptr);
+ ptr++;
+ pcr->ci++;
+ }
+ spin_unlock_irqrestore(&pcr->lock, flags);
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_add_cmd);
+
+void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr)
+{
+ u32 val = 1 << 31;
+
+ rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
+
+ val |= (u32)(pcr->ci * 4) & 0x00FFFFFF;
+ /* Hardware Auto Response */
+ val |= 0x40000000;
+ rtsx_pci_writel(pcr, RTSX_HCBCTLR, val);
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_send_cmd_no_wait);
+
+int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout)
+{
+ struct completion trans_done;
+ u32 val = 1 << 31;
+ long timeleft;
+ unsigned long flags;
+ int err = 0;
+
+ spin_lock_irqsave(&pcr->lock, flags);
+
+ /* set up data structures for the wakeup system */
+ pcr->done = &trans_done;
+ pcr->trans_result = TRANS_NOT_READY;
+ init_completion(&trans_done);
+ pcr->trans_state = STATE_TRANS_CMD;
+
+ rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
+
+ val |= (u32)(pcr->ci * 4) & 0x00FFFFFF;
+ /* Hardware Auto Response */
+ val |= 0x40000000;
+ rtsx_pci_writel(pcr, RTSX_HCBCTLR, val);
+
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ /* Wait for TRANS_OK_INT */
+ timeleft = wait_for_completion_interruptible_timeout(
+ &trans_done, msecs_to_jiffies(timeout));
+ if (timeleft <= 0) {
+ dev_dbg(&(pcr->pci->dev), "pcr->int_reg = 0x%x\n",
+ pcr->int_reg);
+ err = -ETIMEDOUT;
+ goto finish_send_cmd;
+ }
+
+ spin_lock_irqsave(&pcr->lock, flags);
+ if (pcr->trans_result == TRANS_RESULT_FAIL)
+ err = -EINVAL;
+ else if (pcr->trans_result == TRANS_RESULT_OK)
+ err = 0;
+ else if (pcr->trans_result == TRANS_NO_DEVICE)
+ err = -ENODEV;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+finish_send_cmd:
+ spin_lock_irqsave(&pcr->lock, flags);
+ pcr->done = NULL;
+ pcr->trans_state = STATE_TRANS_NONE;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ if ((err < 0) && (err != -ENODEV))
+ rtsx_pci_stop_cmd(pcr);
+
+ if (pcr->finish_me)
+ complete(pcr->finish_me);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_send_cmd);
+
+/**
+ * The length field is 20-bit long. So if the buffer length is
+ * longer than 0x80000, this function will divide the buffer into
+ * several small buffers to ensure the length field won't overflow.
+ */
+static void rtsx_pci_add_sg_tbl(struct rtsx_pcr *pcr,
+ u32 addr, u32 len, u8 option)
+{
+ u64 *ptr = (u64 *)(pcr->host_sg_tbl_ptr);
+ u64 val = 0;
+ u32 temp_len = 0;
+ u8 temp_opt = 0;
+
+ ptr += pcr->sgi;
+ do {
+ if (len > 0x80000) {
+ temp_len = 0x80000;
+ temp_opt = option & (~SG_END);
+ } else {
+ temp_len = len;
+ temp_opt = option;
+ }
+ val = ((u64)addr << 32) | ((u64)temp_len << 12) | temp_opt;
+
+ if (pcr->sgi < (HOST_SG_TBL_BUF_LEN / 8)) {
+ put_unaligned_le64(val, ptr);
+ ptr++;
+ pcr->sgi++;
+ }
+
+ len -= temp_len;
+ addr += temp_len;
+ } while (len);
+}
+
+static int rtsx_pci_transfer_sglist_adma(struct rtsx_pcr *pcr,
+ struct scatterlist *sg, int num_sg, int read, int timeout)
+{
+ struct completion trans_done;
+ u8 dir;
+ int buf_cnt, i;
+ int err = 0;
+ long timeleft;
+ unsigned long flags;
+ struct scatterlist *sg_ptr;
+ enum dma_data_direction dma_dir;
+
+ if ((sg == NULL) || (num_sg <= 0))
+ return -EINVAL;
+
+ if (read) {
+ dir = DEVICE_TO_HOST;
+ dma_dir = DMA_FROM_DEVICE;
+ } else {
+ dir = HOST_TO_DEVICE;
+ dma_dir = DMA_TO_DEVICE;
+ }
+
+ spin_lock_irqsave(&pcr->lock, flags);
+
+ /* set up data structures for the wakeup system */
+ pcr->done = &trans_done;
+ pcr->trans_state = STATE_TRANS_SG;
+ pcr->trans_result = TRANS_NOT_READY;
+
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ buf_cnt = dma_map_sg(&(pcr->pci->dev), sg, num_sg, dma_dir);
+
+ sg_ptr = sg;
+ for (i = 0; i <= buf_cnt / (HOST_SG_TBL_BUF_LEN / 8); i++) {
+ u32 val = TRIG_DMA;
+ int sg_cnt, j;
+
+ if (i == buf_cnt / (HOST_SG_TBL_BUF_LEN / 8))
+ sg_cnt = buf_cnt % (HOST_SG_TBL_BUF_LEN / 8);
+ else
+ sg_cnt = (HOST_SG_TBL_BUF_LEN / 8);
+
+ pcr->sgi = 0;
+ for (j = 0; j < sg_cnt; j++) {
+ dma_addr_t addr = sg_dma_address(sg_ptr);
+ unsigned int len = sg_dma_len(sg_ptr);
+ u8 option;
+
+ dev_dbg(&(pcr->pci->dev),
+ "DMA addr: 0x%x, Len: 0x%x\n",
+ (unsigned int)addr, len);
+
+ if (j == (sg_cnt - 1))
+ option = SG_VALID | SG_END | SG_TRANS_DATA;
+ else
+ option = SG_VALID | SG_TRANS_DATA;
+
+ rtsx_pci_add_sg_tbl(pcr, (u32)addr, (u32)len, option);
+ sg_ptr = sg_next(sg_ptr);
+ }
+
+ dev_dbg(&(pcr->pci->dev), "SG table count = %d\n", pcr->sgi);
+
+ val |= (u32)(dir & 0x01) << 29;
+ val |= ADMA_MODE;
+
+ spin_lock_irqsave(&pcr->lock, flags);
+
+ init_completion(&trans_done);
+
+ rtsx_pci_writel(pcr, RTSX_HDBAR, pcr->host_sg_tbl_addr);
+ rtsx_pci_writel(pcr, RTSX_HDBCTLR, val);
+
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ timeleft = wait_for_completion_interruptible_timeout(
+ &trans_done, msecs_to_jiffies(timeout));
+ if (timeleft <= 0) {
+ dev_dbg(&(pcr->pci->dev), "Timeout (%s %d)\n",
+ __func__, __LINE__);
+ err = -ETIMEDOUT;
+ goto out;
+ }
+
+ spin_lock_irqsave(&pcr->lock, flags);
+ if (pcr->trans_result == TRANS_RESULT_FAIL) {
+ err = -EINVAL;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+ goto out;
+ } else if (pcr->trans_result == TRANS_NO_DEVICE) {
+ err = -ENODEV;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+ goto out;
+ }
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ sg_ptr += sg_cnt;
+ }
+
+ /* Wait for TRANS_OK_INT */
+ spin_lock_irqsave(&pcr->lock, flags);
+ if (pcr->trans_result == TRANS_NOT_READY) {
+ init_completion(&trans_done);
+ spin_unlock_irqrestore(&pcr->lock, flags);
+ timeleft = wait_for_completion_interruptible_timeout(
+ &trans_done, msecs_to_jiffies(timeout));
+ if (timeleft <= 0) {
+ dev_dbg(&(pcr->pci->dev), "Timeout (%s %d)\n",
+ __func__, __LINE__);
+ err = -ETIMEDOUT;
+ goto out;
+ }
+ } else {
+ spin_unlock_irqrestore(&pcr->lock, flags);
+ }
+
+ spin_lock_irqsave(&pcr->lock, flags);
+ if (pcr->trans_result == TRANS_RESULT_FAIL)
+ err = -EINVAL;
+ else if (pcr->trans_result == TRANS_RESULT_OK)
+ err = 0;
+ else if (pcr->trans_result == TRANS_NO_DEVICE)
+ err = -ENODEV;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+out:
+ spin_lock_irqsave(&pcr->lock, flags);
+ pcr->done = NULL;
+ pcr->trans_state = STATE_TRANS_NONE;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ dma_unmap_sg(&(pcr->pci->dev), sg, num_sg, dma_dir);
+
+ if ((err < 0) && (err != -ENODEV))
+ rtsx_pci_stop_cmd(pcr);
+
+ if (pcr->finish_me)
+ complete(pcr->finish_me);
+
+ return err;
+}
+
+static int rtsx_pci_transfer_buf(struct rtsx_pcr *pcr,
+ void *buf, size_t len, int read, int timeout)
+{
+ struct completion trans_done;
+ dma_addr_t addr;
+ u8 dir;
+ int err = 0;
+ u32 val = (1 << 31);
+ long timeleft;
+ unsigned long flags;
+ enum dma_data_direction dma_dir;
+
+ if ((buf == NULL) || (len <= 0))
+ return -EINVAL;
+
+ if (read) {
+ dir = DEVICE_TO_HOST;
+ dma_dir = DMA_FROM_DEVICE;
+ } else {
+ dir = HOST_TO_DEVICE;
+ dma_dir = DMA_TO_DEVICE;
+ }
+
+ addr = dma_map_single(&(pcr->pci->dev), buf, len, dma_dir);
+ if (!addr)
+ return -EINVAL;
+
+ val |= (u32)(dir & 0x01) << 29;
+ val |= (u32)(len & 0x00FFFFFF);
+
+ spin_lock_irqsave(&pcr->lock, flags);
+
+ /* set up data structures for the wakeup system */
+ pcr->done = &trans_done;
+
+ init_completion(&trans_done);
+
+ pcr->trans_state = STATE_TRANS_BUF;
+ pcr->trans_result = TRANS_NOT_READY;
+
+ rtsx_pci_writel(pcr, RTSX_HDBAR, addr);
+ rtsx_pci_writel(pcr, RTSX_HDBCTLR, val);
+
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ /* Wait for TRANS_OK_INT */
+ timeleft = wait_for_completion_interruptible_timeout(&trans_done,
+ msecs_to_jiffies(timeout));
+ if (timeleft <= 0) {
+ dev_dbg(&(pcr->pci->dev), "Timeout (%s %d)\n",
+ __func__, __LINE__);
+ err = -ETIMEDOUT;
+ goto out;
+ }
+
+ spin_lock_irqsave(&pcr->lock, flags);
+ if (pcr->trans_result == TRANS_RESULT_FAIL)
+ err = -EINVAL;
+ else if (pcr->trans_result == TRANS_RESULT_OK)
+ err = 0;
+ else if (pcr->trans_result == TRANS_NO_DEVICE)
+ err = -ENODEV;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+out:
+ spin_lock_irqsave(&pcr->lock, flags);
+ pcr->done = NULL;
+ pcr->trans_state = STATE_TRANS_NONE;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ dma_unmap_single(&(pcr->pci->dev), addr, len, dma_dir);
+
+ if ((err < 0) && (err != -ENODEV))
+ rtsx_pci_stop_cmd(pcr);
+
+ if (pcr->finish_me)
+ complete(pcr->finish_me);
+
+ return err;
+}
+
+int rtsx_pci_transfer_data(struct rtsx_pcr *pcr,
+ void *buf, size_t len, int use_sg, int read, int timeout)
+{
+ int err = 0;
+
+ dev_dbg(&(pcr->pci->dev), "use_sg = %d\n", use_sg);
+
+ /* don't transfer data during abort processing */
+ if (pcr->remove_pci)
+ return -EINVAL;
+
+ if (use_sg) {
+ err = rtsx_pci_transfer_sglist_adma(pcr,
+ (struct scatterlist *)buf, use_sg,
+ read, timeout);
+ } else {
+ err = rtsx_pci_transfer_buf(pcr, buf, len, read, timeout);
+ }
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_transfer_data);
+
+int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len)
+{
+ int err;
+ int i, j;
+ u16 reg;
+ u8 *ptr;
+
+ if (buf_len > 512)
+ buf_len = 512;
+
+ ptr = buf;
+ reg = PPBUF_BASE2;
+ for (i = 0; i < buf_len / 256; i++) {
+ rtsx_pci_init_cmd(pcr);
+
+ for (j = 0; j < 256; j++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, reg++, 0, 0);
+
+ err = rtsx_pci_send_cmd(pcr, 250);
+ if (err < 0)
+ return err;
+
+ memcpy(ptr, rtsx_pci_get_cmd_data(pcr), 256);
+ ptr += 256;
+ }
+
+ if (buf_len % 256) {
+ rtsx_pci_init_cmd(pcr);
+
+ for (j = 0; j < buf_len % 256; j++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, reg++, 0, 0);
+
+ err = rtsx_pci_send_cmd(pcr, 250);
+ if (err < 0)
+ return err;
+ }
+
+ memcpy(ptr, rtsx_pci_get_cmd_data(pcr), buf_len % 256);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_read_ppbuf);
+
+int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len)
+{
+ int err;
+ int i, j;
+ u16 reg;
+ u8 *ptr;
+
+ if (buf_len > 512)
+ buf_len = 512;
+
+ ptr = buf;
+ reg = PPBUF_BASE2;
+ for (i = 0; i < buf_len / 256; i++) {
+ rtsx_pci_init_cmd(pcr);
+
+ for (j = 0; j < 256; j++) {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ reg++, 0xFF, *ptr);
+ ptr++;
+ }
+
+ err = rtsx_pci_send_cmd(pcr, 250);
+ if (err < 0)
+ return err;
+ }
+
+ if (buf_len % 256) {
+ rtsx_pci_init_cmd(pcr);
+
+ for (j = 0; j < buf_len % 256; j++) {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ reg++, 0xFF, *ptr);
+ ptr++;
+ }
+
+ err = rtsx_pci_send_cmd(pcr, 250);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_write_ppbuf);
+
+static int rtsx_pci_set_pull_ctl(struct rtsx_pcr *pcr, const u32 *tbl)
+{
+ int err;
+
+ rtsx_pci_init_cmd(pcr);
+
+ while (*tbl & 0xFFFF0000) {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ (u16)(*tbl >> 16), 0xFF, (u8)(*tbl));
+ tbl++;
+ }
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+int rtsx_pci_sd_pull_ctl_enable(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_set_pull_ctl(pcr, pcr->sd_pull_ctl_enable_tbl);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_sd_pull_ctl_enable);
+
+int rtsx_pci_sd_pull_ctl_disable(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ err = rtsx_pci_set_pull_ctl(pcr, pcr->sd_pull_ctl_disable_tbl);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_sd_pull_ctl_disable);
+
+static void rtsx_pci_enable_bus_int(struct rtsx_pcr *pcr)
+{
+ u32 reg = 0;
+
+ reg = TRANS_OK_INT_EN | TRANS_FAIL_INT_EN;
+
+ reg |= SD_INT_EN | SD_OC_INT_EN;
+
+ /* Enable Bus Interrupt */
+ rtsx_pci_writel(pcr, RTSX_BIER, reg);
+
+ dev_dbg(&(pcr->pci->dev), "RTSX_BIER: 0x%08x\n", reg);
+}
+
+static inline u8 double_ssc_depth(u8 depth)
+{
+ return ((depth > 1) ? (depth - 1) : depth);
+}
+
+static u8 revise_ssc_depth(u8 ssc_depth, u8 div)
+{
+ if (div > CLK_DIV_1) {
+ if (ssc_depth > (div - 1))
+ ssc_depth -= (div - 1);
+ else
+ ssc_depth = SSC_DEPTH_4M;
+ }
+
+ return ssc_depth;
+}
+
+int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
+ u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk)
+{
+ int err, clk;
+ u8 N, min_N, max_N, clk_divider;
+ u8 mcu_cnt, div, max_div;
+ u8 depth[] = {
+ [RTSX_SSC_DEPTH_4M] = SSC_DEPTH_4M,
+ [RTSX_SSC_DEPTH_2M] = SSC_DEPTH_2M,
+ [RTSX_SSC_DEPTH_1M] = SSC_DEPTH_1M,
+ [RTSX_SSC_DEPTH_500K] = SSC_DEPTH_500K,
+ [RTSX_SSC_DEPTH_250K] = SSC_DEPTH_250K,
+ };
+
+ if (initial_mode) {
+ /* We use 250k(around) here, in initial stage */
+ clk_divider = SD_CLK_DIVIDE_128;
+ card_clock = 30000000;
+ } else {
+ clk_divider = SD_CLK_DIVIDE_0;
+ }
+ err = rtsx_pci_write_register(pcr, SD_CFG1,
+ SD_CLK_DIVIDE_MASK, clk_divider);
+ if (err < 0)
+ return err;
+
+ card_clock /= 1000000;
+ dev_dbg(&(pcr->pci->dev), "Switch card clock to %dMHz\n", card_clock);
+
+ min_N = 80;
+ max_N = 208;
+ max_div = CLK_DIV_8;
+
+ clk = card_clock;
+ if (!initial_mode && double_clk)
+ clk = card_clock * 2;
+ dev_dbg(&(pcr->pci->dev), "Internal SSC clock: %dMHz\n", clk);
+
+ N = (u8)(clk - 2);
+ if ((clk <= 2) || (N > max_N))
+ return -EINVAL;
+
+ mcu_cnt = (u8)(125/clk + 3);
+ if (mcu_cnt > 15)
+ mcu_cnt = 15;
+
+ /* Make sure that the SSC clock div_n is equal or greater than min_N */
+ div = CLK_DIV_1;
+ while ((N < min_N) && (div < max_div)) {
+ N = (N + 2) * 2 - 2;
+ div++;
+ }
+ dev_dbg(&(pcr->pci->dev), "N = %d, div = %d\n", N, div);
+
+ ssc_depth = depth[ssc_depth];
+ if (double_clk)
+ ssc_depth = double_ssc_depth(ssc_depth);
+
+ ssc_depth = revise_ssc_depth(ssc_depth, div);
+ dev_dbg(&(pcr->pci->dev), "ssc_depth = %d\n", ssc_depth);
+
+ rtsx_pci_init_cmd(pcr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL,
+ CLK_LOW_FREQ, CLK_LOW_FREQ);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV,
+ 0xFF, (div << 4) | mcu_cnt);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2,
+ SSC_DEPTH_MASK, ssc_depth);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, N);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
+ if (vpclk) {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
+ PHASE_NOT_RESET, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
+ PHASE_NOT_RESET, PHASE_NOT_RESET);
+ }
+
+ err = rtsx_pci_send_cmd(pcr, 2000);
+ if (err < 0)
+ return err;
+
+ /* Wait SSC clock stable */
+ udelay(10);
+ err = rtsx_pci_write_register(pcr, CLK_CTL, CLK_LOW_FREQ, 0);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_switch_clock);
+
+void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr)
+{
+ struct completion finish;
+
+ pcr->finish_me = &finish;
+ init_completion(&finish);
+
+ if (pcr->done)
+ complete(pcr->done);
+
+ if (!pcr->remove_pci)
+ rtsx_pci_stop_cmd(pcr);
+
+ wait_for_completion_interruptible_timeout(&finish,
+ msecs_to_jiffies(2));
+ pcr->finish_me = NULL;
+}
+EXPORT_SYMBOL_GPL(rtsx_pci_complete_unfinished_transfer);
+
+static struct platform_device *rtsx_pci_create_subdev(struct rtsx_pcr *pcr,
+ const char *name, int slot_id)
+{
+ struct platform_device *p_dev;
+ int err;
+
+ p_dev = platform_device_alloc(name, pcr->id);
+ if (p_dev == NULL) {
+ dev_dbg(&(pcr->pci->dev), "alloc platform device fail!\n");
+ return NULL;
+ }
+
+ p_dev->dev.parent = &(pcr->pci->dev);
+ platform_set_drvdata(p_dev, pcr);
+ pcr->slots[slot_id].p_dev = p_dev;
+
+ err = platform_device_add(p_dev);
+ if (err) {
+ dev_dbg(&(pcr->pci->dev), "add platform device fail!\n");
+ pcr->slots[slot_id].p_dev = NULL;
+ platform_device_put(p_dev);
+ return NULL;
+ }
+
+ return p_dev;
+}
+
+static void rtsx_pci_card_detect(struct work_struct *work)
+{
+ struct delayed_work *dwork;
+ struct rtsx_pcr *pcr;
+ unsigned long flags;
+ u32 irq_status;
+
+ dwork = to_delayed_work(work);
+ pcr = container_of(dwork, struct rtsx_pcr, carddet_work);
+
+ dev_dbg(&(pcr->pci->dev), "--> %s\n", __func__);
+
+ spin_lock_irqsave(&pcr->lock, flags);
+
+ irq_status = rtsx_pci_readl(pcr, RTSX_BIPR);
+ dev_dbg(&(pcr->pci->dev), "irq_status: 0x%08x\n", irq_status);
+
+ if (pcr->need_release) {
+ /* Card unplugged */
+ dev_dbg(&(pcr->pci->dev), "need_release: 0x%x\n",
+ pcr->need_release);
+
+ if (pcr->need_release & SD_EXIST) {
+ pcr->need_release &= ~SD_EXIST;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+ if (pcr->slots[RTSX_SD_SLOT].p_dev) {
+ platform_device_unregister(
+ pcr->slots[RTSX_SD_SLOT].p_dev);
+ pcr->slots[RTSX_SD_SLOT].p_dev = NULL;
+ }
+ spin_lock_irqsave(&pcr->lock, flags);
+ }
+ }
+
+ if (pcr->need_reset) {
+ /* Card plugged in */
+ pcr->need_reset &= irq_status;
+ if (!pcr->need_reset)
+ goto out;
+
+ dev_dbg(&(pcr->pci->dev), "need_reset: 0x%x\n",
+ pcr->need_reset);
+
+ if (pcr->need_reset & SD_EXIST) {
+ pcr->need_reset &= ~SD_EXIST;
+ spin_unlock_irqrestore(&pcr->lock, flags);
+
+ pcr->slots[RTSX_SD_SLOT].p_dev =
+ rtsx_pci_create_subdev(pcr,
+ DRV_NAME_RTSX_PCI_SDMMC, RTSX_SD_SLOT);
+
+ spin_lock_irqsave(&pcr->lock, flags);
+ }
+ }
+
+out:
+ spin_unlock_irqrestore(&pcr->lock, flags);
+}
+
+static irqreturn_t rtsx_pci_isr(int irq, void *dev_id)
+{
+ struct rtsx_pcr *pcr = dev_id;
+ u32 int_enable, int_reg;
+
+ if (!pcr)
+ return IRQ_NONE;
+
+ spin_lock(&pcr->lock);
+
+ int_enable = rtsx_pci_readl(pcr, RTSX_BIER);
+ int_reg = rtsx_pci_readl(pcr, RTSX_BIPR);
+ /* Clear interrupt flag */
+ rtsx_pci_writel(pcr, RTSX_BIPR, int_reg);
+ if ((int_reg & int_enable) == 0) {
+ spin_unlock(&pcr->lock);
+ return IRQ_NONE;
+ }
+ if (int_reg == 0xFFFFFFFF) {
+ spin_unlock(&pcr->lock);
+ return IRQ_HANDLED;
+ }
+
+ int_reg &= (int_enable | 0x7FFFFF);
+
+ if (int_reg & SD_INT) {
+ if (int_reg & SD_EXIST) {
+ pcr->need_reset |= SD_EXIST;
+ } else {
+ pcr->need_release |= SD_EXIST;
+ pcr->need_reset &= ~SD_EXIST;
+ }
+ }
+
+ if (pcr->need_reset || pcr->need_release)
+ queue_delayed_work(workqueue, &pcr->carddet_work,
+ msecs_to_jiffies(200));
+
+ if (int_reg & (NEED_COMPLETE_INT | DELINK_INT)) {
+ if (int_reg & (TRANS_FAIL_INT | DELINK_INT)) {
+ pcr->trans_result = TRANS_RESULT_FAIL;
+ if (pcr->done)
+ complete(pcr->done);
+ } else if (int_reg & TRANS_OK_INT) {
+ pcr->trans_result = TRANS_RESULT_OK;
+ if (pcr->done)
+ complete(pcr->done);
+ } else if (int_reg & DATA_DONE_INT) {
+ pcr->trans_result = TRANS_NOT_READY;
+ if (pcr->done && (pcr->trans_state == STATE_TRANS_SG))
+ complete(pcr->done);
+ }
+ }
+
+ spin_unlock(&pcr->lock);
+ return IRQ_HANDLED;
+}
+
+static int rtsx_pci_acquire_irq(struct rtsx_pcr *pcr)
+{
+ dev_info(&(pcr->pci->dev), "%s: pcr->msi_en = %d, pci->irq = %d\n",
+ __func__, pcr->msi_en, pcr->pci->irq);
+
+ if (request_irq(pcr->pci->irq, rtsx_pci_isr,
+ pcr->msi_en ? 0 : IRQF_SHARED,
+ DRV_NAME_RTSX_PCR, pcr)) {
+ dev_err(&(pcr->pci->dev),
+ "rtsx_sdmmc: unable to grab IRQ %d, disabling device\n",
+ pcr->pci->irq);
+ return -1;
+ }
+
+ pcr->irq = pcr->pci->irq;
+ pci_intx(pcr->pci, !pcr->msi_en);
+
+ return 0;
+}
+
+static void rtsx_pci_enter_idle(unsigned long __data)
+{
+ struct rtsx_pcr *pcr = (struct rtsx_pcr *)__data;
+
+ queue_work(workqueue, &pcr->idle_work);
+}
+
+static void rtsx_pci_idle_work(struct work_struct *work)
+{
+ struct rtsx_pcr *pcr = container_of(work, struct rtsx_pcr, idle_work);
+
+ dev_dbg(&(pcr->pci->dev), "--> %s\n", __func__);
+
+ mutex_lock(&pcr->pcr_mutex);
+
+ pcr->state = PDEV_STAT_IDLE;
+
+ pcr->ops->disable_auto_blink(pcr);
+ pcr->ops->turn_off_led(pcr);
+
+ mutex_unlock(&pcr->pcr_mutex);
+}
+
+static int rtsx_pci_init_hw(struct rtsx_pcr *pcr)
+{
+ int err;
+
+ rtsx_pci_writel(pcr, RTSX_HCBAR, pcr->host_cmds_addr);
+
+ rtsx_pci_enable_bus_int(pcr);
+
+ /* Power on SSC */
+ err = rtsx_pci_write_register(pcr, FPDCTL, SSC_POWER_DOWN, 0);
+ if (err < 0)
+ return err;
+
+ /* Wait SSC power stable */
+ udelay(200);
+
+ err = pcr->ops->optimize_phy(pcr);
+ if (err < 0)
+ return err;
+
+ rtsx_pci_init_cmd(pcr);
+
+ /* Set mcu_cnt to 7 to ensure data can be sampled properly */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_DIV, 0x07, 0x07);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, HOST_SLEEP_STATE, 0x03, 0x00);
+ /* Disable card clock */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, 0x1E, 0);
+ /* Reset ASPM state to default value */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, ASPM_FORCE_CTL, 0x3F, 0);
+ /* Card driving select */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_D);
+ /* Enlarge the estimation window of PERST# glitch
+ * to reduce the chance of invalid card interrupt
+ */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PERST_GLITCH_WIDTH, 0xFF, 0x80);
+ /* Update RC oscillator to 400k
+ * bit[0] F_HIGH: for RC oscillator, Rst_value is 1'b1
+ * 1: 2M 0: 400k
+ */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RCCTL, 0x01, 0x00);
+ /* Set interrupt write clear
+ * bit 1: U_elbi_if_rd_clr_en
+ * 1: Enable ELBI interrupt[31:22] & [7:0] flag read clear
+ * 0: ELBI interrupt flag[31:22] & [7:0] only can be write clear
+ */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, NFTS_TX_CTRL, 0x02, 0);
+ /* Force CLKREQ# PIN to drive 0 to request clock */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0x08, 0x08);
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ err = pcr->ops->extra_init_hw(pcr);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+/* SD Pull Control Enable:
+ * SD_DAT[3:0] ==> pull up
+ * SD_CD ==> pull up
+ * SD_WP ==> pull up
+ * SD_CMD ==> pull up
+ * SD_CLK ==> pull down
+ */
+static const u32 rts5209_sd_pull_ctl_enable_tbl[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
+ RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
+ RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9),
+ 0,
+};
+
+static const u32 rts5229_sd_pull_ctl_enable_tbl1[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
+ RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9),
+ 0,
+};
+
+/* For RTS5229 version C */
+static const u32 rts5229_sd_pull_ctl_enable_tbl2[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
+ RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD9),
+ 0,
+};
+
+/* SD Pull Control Disable:
+ * SD_DAT[3:0] ==> pull down
+ * SD_CD ==> pull up
+ * SD_WP ==> pull down
+ * SD_CMD ==> pull down
+ * SD_CLK ==> pull down
+ */
+static const u32 rts5209_sd_pull_ctl_disable_tbl[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL1, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
+ 0,
+};
+
+static const u32 rts5229_sd_pull_ctl_disable_tbl1[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
+ 0,
+};
+
+/* For RTS5229 version C */
+static const u32 rts5229_sd_pull_ctl_disable_tbl2[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE5),
+ 0,
+};
+
+static int rtsx_pci_init_chip(struct rtsx_pcr *pcr)
+{
+ int err;
+ u32 irq_status;
+
+ spin_lock_init(&pcr->lock);
+ mutex_init(&pcr->pcr_mutex);
+
+ switch (PCI_PID(pcr)) {
+ default:
+ case 0x5209:
+ pcr->extra_caps = EXTRA_CAPS_SD_SDR50 |
+ EXTRA_CAPS_SD_SDR104 | EXTRA_CAPS_MMC_8BIT;
+
+ pcr->rval.ldo_pwr_on = 0x00;
+ pcr->rval.ldo_pwr_off = 0x06;
+ pcr->rval.ldo_pwr_suspend = 0x04;
+
+ pcr->num_slots = 1;
+ pcr->ops = &rts5209_pcr_ops;
+
+ pcr->ic_version = pcr->ops->get_ic_version(pcr);
+ pcr->sd_pull_ctl_enable_tbl = rts5209_sd_pull_ctl_enable_tbl;
+ pcr->sd_pull_ctl_disable_tbl = rts5209_sd_pull_ctl_disable_tbl;
+
+ break;
+
+ case 0x5229:
+ pcr->extra_caps = EXTRA_CAPS_SD_SDR50 |
+ EXTRA_CAPS_SD_SDR104;
+
+ pcr->rval.ldo_pwr_on = 0x06;
+ pcr->rval.ldo_pwr_off = 0x00;
+ pcr->rval.ldo_pwr_suspend = 0x02;
+
+ pcr->num_slots = 1;
+ pcr->ops = &rts5229_pcr_ops;
+
+ pcr->ic_version = pcr->ops->get_ic_version(pcr);
+ if (pcr->ic_version == IC_VER_C) {
+ pcr->sd_pull_ctl_enable_tbl =
+ rts5229_sd_pull_ctl_enable_tbl2;
+ pcr->sd_pull_ctl_disable_tbl =
+ rts5229_sd_pull_ctl_disable_tbl2;
+ } else {
+ pcr->sd_pull_ctl_enable_tbl =
+ rts5229_sd_pull_ctl_enable_tbl1;
+ pcr->sd_pull_ctl_disable_tbl =
+ rts5229_sd_pull_ctl_disable_tbl1;
+ }
+
+ break;
+ }
+
+ dev_dbg(&(pcr->pci->dev), "PID: 0x%04x, IC version: 0x%02x\n",
+ PCI_PID(pcr), pcr->ic_version);
+
+ pcr->slots = kzalloc(sizeof(struct rtsx_slot) * pcr->num_slots,
+ GFP_KERNEL);
+ if (!pcr->slots)
+ return -ENOMEM;
+
+ pcr->state = PDEV_STAT_IDLE;
+ err = rtsx_pci_init_hw(pcr);
+ if (err < 0) {
+ kfree(pcr->slots);
+ return err;
+ }
+
+ irq_status = rtsx_pci_readl(pcr, RTSX_BIPR);
+ /* Clear interrupt flag */
+ rtsx_pci_writel(pcr, RTSX_BIPR, irq_status);
+ if (irq_status & SD_EXIST)
+ pcr->need_reset |= SD_EXIST;
+
+ if (pcr->need_reset)
+ queue_delayed_work(workqueue, &pcr->carddet_work, 0);
+
+ return 0;
+}
+
+static int __devinit rtsx_pci_probe(struct pci_dev *pcidev,
+ const struct pci_device_id *id)
+{
+ struct rtsx_pcr *pcr;
+ u32 base, len;
+ int ret;
+
+ dev_dbg(&(pcidev->dev),
+ ": Realtek PCI-E Card Reader found at %s [%04x:%04x] (rev %x)\n",
+ pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device,
+ (int)pcidev->revision);
+
+ ret = pci_enable_device(pcidev);
+ if (ret)
+ return ret;
+
+ ret = pci_request_regions(pcidev, DRV_NAME_RTSX_PCR);
+ if (ret)
+ goto disable;
+
+ pcr = kzalloc(sizeof(*pcr), GFP_KERNEL);
+ if (!pcr) {
+ ret = -ENOMEM;
+ goto release_pci;
+ }
+
+ if (!idr_pre_get(&rtsx_pci_idr, GFP_KERNEL)) {
+ ret = -ENOMEM;
+ goto free_pcr;
+ }
+
+ spin_lock(&rtsx_pci_lock);
+ ret = idr_get_new(&rtsx_pci_idr, pcr, &pcr->id);
+ spin_unlock(&rtsx_pci_lock);
+ if (ret)
+ goto free_pcr;
+
+ pcr->pci = pcidev;
+ dev_set_drvdata(&pcidev->dev, pcr);
+
+ len = pci_resource_len(pcidev, 0);
+ base = pci_resource_start(pcidev, 0);
+ pcr->remap_addr = ioremap_nocache(base, len);
+ if (!pcr->remap_addr) {
+ ret = -ENOMEM;
+ goto free_host;
+ }
+
+ pcr->rtsx_resv_buf = dma_alloc_coherent(&(pcidev->dev),
+ RTSX_RESV_BUF_LEN, &(pcr->rtsx_resv_buf_addr),
+ GFP_KERNEL);
+ if (pcr->rtsx_resv_buf == NULL) {
+ ret = -ENXIO;
+ goto unmap;
+ }
+ pcr->host_cmds_ptr = pcr->rtsx_resv_buf;
+ pcr->host_cmds_addr = pcr->rtsx_resv_buf_addr;
+ pcr->host_sg_tbl_ptr = pcr->rtsx_resv_buf + HOST_CMDS_BUF_LEN;
+ pcr->host_sg_tbl_addr = pcr->rtsx_resv_buf_addr + HOST_CMDS_BUF_LEN;
+
+ pcr->need_reset = 0;
+ pcr->need_release = 0;
+ INIT_DELAYED_WORK(&pcr->carddet_work, rtsx_pci_card_detect);
+ INIT_WORK(&pcr->idle_work, rtsx_pci_idle_work);
+ init_timer(&pcr->idle_timer);
+
+ pcr->msi_en = msi_en;
+ if (pcr->msi_en) {
+ ret = pci_enable_msi(pcidev);
+ if (ret < 0)
+ pcr->msi_en = false;
+ }
+
+ ret = rtsx_pci_acquire_irq(pcr);
+ if (ret < 0)
+ goto free_dma;
+
+ pci_set_master(pcidev);
+ synchronize_irq(pcr->irq);
+
+ ret = rtsx_pci_init_chip(pcr);
+ if (ret < 0)
+ goto disable_irq;
+
+ pcr->idle_timer.expires = jiffies + msecs_to_jiffies(200);
+ pcr->idle_timer.data = (unsigned long)pcr;
+ pcr->idle_timer.function = rtsx_pci_enter_idle;
+ add_timer(&pcr->idle_timer);
+
+ return 0;
+
+disable_irq:
+ free_irq(pcr->irq, (void *)pcr);
+free_dma:
+ dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN,
+ pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr);
+unmap:
+ iounmap(pcr->remap_addr);
+free_host:
+ dev_set_drvdata(&pcidev->dev, NULL);
+free_pcr:
+ kfree(pcr);
+release_pci:
+ pci_release_regions(pcidev);
+disable:
+ pci_disable_device(pcidev);
+
+ return ret;
+}
+
+static void __devexit rtsx_pci_remove(struct pci_dev *pcidev)
+{
+ struct rtsx_pcr *pcr = pci_get_drvdata(pcidev);
+ int i;
+
+ pcr->remove_pci = true;
+
+ flush_workqueue(workqueue);
+ cancel_delayed_work(&pcr->carddet_work);
+ del_timer_sync(&pcr->idle_timer);
+
+ for (i = 0; i < pcr->num_slots; i++) {
+ if (pcr->slots[i].p_dev) {
+ platform_device_unregister(pcr->slots[i].p_dev);
+ pcr->slots[i].p_dev = NULL;
+ }
+ }
+
+ dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN,
+ pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr);
+ free_irq(pcr->irq, (void *)pcr);
+ if (pcr->msi_en)
+ pci_disable_msi(pcr->pci);
+ iounmap(pcr->remap_addr);
+
+ dev_set_drvdata(&pcidev->dev, NULL);
+ pci_release_regions(pcidev);
+ pci_disable_device(pcidev);
+
+ spin_lock(&rtsx_pci_lock);
+ idr_remove(&rtsx_pci_idr, pcr->id);
+ spin_unlock(&rtsx_pci_lock);
+
+ kfree(pcr->slots);
+ kfree(pcr);
+
+ dev_dbg(&(pcidev->dev),
+ ": Realtek PCI-E Card Reader at %s [%04x:%04x] has been removed\n",
+ pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device);
+}
+
+#ifdef CONFIG_PM
+
+static int rtsx_pci_suspend(struct pci_dev *pcidev, pm_message_t state)
+{
+ struct rtsx_pcr *pcr;
+ int ret = 0;
+
+ pcr = pci_get_drvdata(pcidev);
+
+ pci_save_state(pcidev);
+ pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0);
+ pci_disable_device(pcidev);
+ pci_set_power_state(pcidev, pci_choose_state(pcidev, state));
+
+ return ret;
+}
+
+static int rtsx_pci_resume(struct pci_dev *pcidev)
+{
+ struct rtsx_pcr *pcr;
+ int ret = 0;
+
+ pcr = pci_get_drvdata(pcidev);
+
+ pci_set_power_state(pcidev, PCI_D0);
+ pci_restore_state(pcidev);
+ ret = pci_enable_device(pcidev);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+#else /* CONFIG_PM */
+
+#define rtsx_pci_suspend NULL
+#define rtsx_pci_resume NULL
+
+#endif /* CONFIG_PM */
+
+static struct pci_driver rtsx_pci_driver = {
+ .name = DRV_NAME_RTSX_PCR,
+ .id_table = rtsx_pci_ids,
+ .probe = rtsx_pci_probe,
+ .remove = __devexit_p(rtsx_pci_remove),
+ .suspend = rtsx_pci_suspend,
+ .resume = rtsx_pci_resume,
+};
+
+static int __init rtsx_pci_drv_init(void)
+{
+ workqueue = create_freezable_workqueue("rtsx_pci_wq");
+ if (!workqueue)
+ return -ENOMEM;
+
+ return pci_register_driver(&rtsx_pci_driver);
+}
+
+static void __exit rtsx_pci_drv_exit(void)
+{
+ pci_unregister_driver(&rtsx_pci_driver);
+ destroy_workqueue(workqueue);
+}
+
+module_init(rtsx_pci_drv_init);
+module_exit(rtsx_pci_drv_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Realtek Corp.");
+MODULE_DESCRIPTION("Realtek PCI-E Card Reader Adapter Driver");
diff --git a/drivers/mfd/rtsx_pcr.h b/drivers/mfd/rtsx_pcr.h
new file mode 100644
index 0000000..8fbc471
--- /dev/null
+++ b/drivers/mfd/rtsx_pcr.h
@@ -0,0 +1,31 @@
+/* Driver for Realtek PCI-Express card reader
+ *
+ * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
+ */
+
+#ifndef __RTSX_PCR_H
+#define __RTSX_PCR_H
+
+#include <linux/mfd/rtsx_pci.h>
+
+extern const struct pcr_ops rts5209_pcr_ops;
+extern const struct pcr_ops rts5229_pcr_ops;
+
+#endif
diff --git a/include/linux/mfd/rtsx_common.h b/include/linux/mfd/rtsx_common.h
new file mode 100644
index 0000000..b200efc
--- /dev/null
+++ b/include/linux/mfd/rtsx_common.h
@@ -0,0 +1,47 @@
+/* Driver for Realtek driver-based card reader
+ *
+ * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
+ */
+
+#ifndef __RTSX_COMMON_H
+#define __RTSX_COMMON_H
+
+#define DRV_NAME_RTSX_PCR "rtsx_pcr"
+#define DRV_NAME_RTSX_PCI_SDMMC "rtsx_pci_sdmmc"
+
+#define RTSX_REG_PAIR(addr, val) (((u32)(addr) << 16) | (u8)(val))
+
+#define RTSX_SSC_DEPTH_4M 0x01
+#define RTSX_SSC_DEPTH_2M 0x02
+#define RTSX_SSC_DEPTH_1M 0x03
+#define RTSX_SSC_DEPTH_500K 0x04
+#define RTSX_SSC_DEPTH_250K 0x05
+
+#define RTSX_SD_SLOT 0
+#define RTSX_MS_SLOT 1
+#define RTSX_XD_SLOT 2
+
+struct platform_device;
+
+struct rtsx_slot {
+ struct platform_device *p_dev;
+};
+
+#endif
diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
new file mode 100644
index 0000000..b91ca83
--- /dev/null
+++ b/include/linux/mfd/rtsx_pci.h
@@ -0,0 +1,692 @@
+/* Driver for Realtek PCI-Express card reader
+ *
+ * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
+ */
+
+#ifndef __RTSX_PCI_H
+#define __RTSX_PCI_H
+
+#include <linux/sched.h>
+#include <linux/pci.h>
+
+#include "rtsx_common.h"
+
+#define MAX_RW_REG_CNT 1024
+
+#define RTSX_MAX_BLOCK_COUNT 65536
+#define RTSX_MAX_BLOCK_LENGTH 2048
+
+/* PCI Operation Register Address */
+#define RTSX_HCBAR 0x00
+#define RTSX_HCBCTLR 0x04
+#define RTSX_HDBAR 0x08
+#define RTSX_HDBCTLR 0x0C
+#define RTSX_HAIMR 0x10
+#define RTSX_BIPR 0x14
+#define RTSX_BIER 0x18
+
+/* Host command buffer control register */
+#define STOP_CMD (0x01 << 28)
+
+/* Host data buffer control register */
+#define SDMA_MODE 0x00
+#define ADMA_MODE (0x02 << 26)
+#define STOP_DMA (0x01 << 28)
+#define TRIG_DMA (0x01 << 31)
+
+/* Bus interrupt pending register */
+#define CMD_DONE_INT (1 << 31)
+#define DATA_DONE_INT (1 << 30)
+#define TRANS_OK_INT (1 << 29)
+#define TRANS_FAIL_INT (1 << 28)
+#define XD_INT (1 << 27)
+#define MS_INT (1 << 26)
+#define SD_INT (1 << 25)
+#define GPIO0_INT (1 << 24)
+#define OC_INT (1 << 23)
+#define SD_WRITE_PROTECT (1 << 19)
+#define XD_EXIST (1 << 18)
+#define MS_EXIST (1 << 17)
+#define SD_EXIST (1 << 16)
+#define DELINK_INT GPIO0_INT
+#define MS_OC_INT (1 << 23)
+#define SD_OC_INT (1 << 22)
+
+#define CARD_INT (XD_INT | MS_INT | SD_INT)
+#define NEED_COMPLETE_INT (DATA_DONE_INT | TRANS_OK_INT | TRANS_FAIL_INT)
+#define RTSX_INT (CMD_DONE_INT | NEED_COMPLETE_INT | \
+ CARD_INT | GPIO0_INT | OC_INT)
+
+#define CARD_EXIST (XD_EXIST | MS_EXIST | SD_EXIST)
+
+/* Bus interrupt enable register */
+#define CMD_DONE_INT_EN (1 << 31)
+#define DATA_DONE_INT_EN (1 << 30)
+#define TRANS_OK_INT_EN (1 << 29)
+#define TRANS_FAIL_INT_EN (1 << 28)
+#define XD_INT_EN (1 << 27)
+#define MS_INT_EN (1 << 26)
+#define SD_INT_EN (1 << 25)
+#define GPIO0_INT_EN (1 << 24)
+#define OC_INT_EN (1 << 23)
+#define DELINK_INT_EN GPIO0_INT_EN
+#define MS_OC_INT_EN (1 << 23)
+#define SD_OC_INT_EN (1 << 22)
+
+#define READ_REG_CMD 0
+#define WRITE_REG_CMD 1
+#define CHECK_REG_CMD 2
+
+/*
+ * macros for easy use
+ */
+#define rtsx_pci_writel(pcr, reg, value) \
+ iowrite32(value, (pcr)->remap_addr + reg)
+#define rtsx_pci_readl(pcr, reg) \
+ ioread32((pcr)->remap_addr + reg)
+#define rtsx_pci_writew(pcr, reg, value) \
+ iowrite16(value, (pcr)->remap_addr + reg)
+#define rtsx_pci_readw(pcr, reg) \
+ ioread16((pcr)->remap_addr + reg)
+#define rtsx_pci_writeb(pcr, reg, value) \
+ iowrite8(value, (pcr)->remap_addr + reg)
+#define rtsx_pci_readb(pcr, reg) \
+ ioread8((pcr)->remap_addr + reg)
+
+#define rtsx_pci_read_config_byte(pcr, where, val) \
+ pci_read_config_byte((pcr)->pci, where, val)
+
+#define rtsx_pci_write_config_byte(pcr, where, val) \
+ pci_write_config_byte((pcr)->pci, where, val)
+
+#define rtsx_pci_read_config_dword(pcr, where, val) \
+ pci_read_config_dword((pcr)->pci, where, val)
+
+#define rtsx_pci_write_config_dword(pcr, where, val) \
+ pci_write_config_dword((pcr)->pci, where, val)
+
+#define STATE_TRANS_NONE 0
+#define STATE_TRANS_CMD 1
+#define STATE_TRANS_BUF 2
+#define STATE_TRANS_SG 3
+
+#define TRANS_NOT_READY 0
+#define TRANS_RESULT_OK 1
+#define TRANS_RESULT_FAIL 2
+#define TRANS_NO_DEVICE 3
+
+#define RTSX_RESV_BUF_LEN 4096
+#define HOST_CMDS_BUF_LEN 1024
+#define HOST_SG_TBL_BUF_LEN (RTSX_RESV_BUF_LEN - HOST_CMDS_BUF_LEN)
+
+#define HOST_TO_DEVICE 0
+#define DEVICE_TO_HOST 1
+
+#define MAX_PHASE 31
+#define RX_TUNING_CNT 3
+
+/* SG descriptor */
+#define SG_INT 0x04
+#define SG_END 0x02
+#define SG_VALID 0x01
+
+#define SG_NO_OP 0x00
+#define SG_TRANS_DATA (0x02 << 4)
+#define SG_LINK_DESC (0x03 << 4)
+
+/* SD bank voltage */
+#define SD_IO_3V3 0
+#define SD_IO_1V8 1
+
+
+/* Card Clock Enable Register */
+#define SD_CLK_EN 0x04
+
+/* Card Select Register */
+#define SD_MOD_SEL 2
+
+/* Card Output Enable Register */
+#define SD_OUTPUT_EN 0x04
+
+/* CARD_SHARE_MODE */
+#define CARD_SHARE_MASK 0x0F
+#define CARD_SHARE_MULTI_LUN 0x00
+#define CARD_SHARE_NORMAL 0x00
+#define CARD_SHARE_48_SD 0x04
+/* CARD_SHARE_MODE for barossa */
+#define CARD_SHARE_BAROSSA_SD 0x01
+
+/* SD30_DRIVE_SEL */
+#define DRIVER_TYPE_A 0x05
+#define DRIVER_TYPE_B 0x03
+#define DRIVER_TYPE_C 0x02
+#define DRIVER_TYPE_D 0x01
+
+/* FPDCTL */
+#define SSC_POWER_DOWN 0x01
+#define SD_OC_POWER_DOWN 0x02
+#define ALL_POWER_DOWN 0x07
+#define OC_POWER_DOWN 0x06
+
+/* CLK_CTL */
+#define CHANGE_CLK 0x01
+
+/* SD_STAT1 */
+#define SD_CRC7_ERR 0x80
+#define SD_CRC16_ERR 0x40
+#define SD_CRC_WRITE_ERR 0x20
+#define SD_CRC_WRITE_ERR_MASK 0x1C
+#define GET_CRC_TIME_OUT 0x02
+#define SD_TUNING_COMPARE_ERR 0x01
+
+/* SD_STAT2 */
+#define SD_RSP_80CLK_TIMEOUT 0x01
+
+/* SD_BUS_STAT */
+#define SD_CLK_TOGGLE_EN 0x80
+#define SD_CLK_FORCE_STOP 0x40
+#define SD_DAT3_STATUS 0x10
+#define SD_DAT2_STATUS 0x08
+#define SD_DAT1_STATUS 0x04
+#define SD_DAT0_STATUS 0x02
+#define SD_CMD_STATUS 0x01
+
+/* SD_PAD_CTL */
+#define SD_IO_USING_1V8 0x80
+#define SD_IO_USING_3V3 0x7F
+#define TYPE_A_DRIVING 0x00
+#define TYPE_B_DRIVING 0x01
+#define TYPE_C_DRIVING 0x02
+#define TYPE_D_DRIVING 0x03
+
+/* SD_SAMPLE_POINT_CTL */
+#define DDR_FIX_RX_DAT 0x00
+#define DDR_VAR_RX_DAT 0x80
+#define DDR_FIX_RX_DAT_EDGE 0x00
+#define DDR_FIX_RX_DAT_14_DELAY 0x40
+#define DDR_FIX_RX_CMD 0x00
+#define DDR_VAR_RX_CMD 0x20
+#define DDR_FIX_RX_CMD_POS_EDGE 0x00
+#define DDR_FIX_RX_CMD_14_DELAY 0x10
+#define SD20_RX_POS_EDGE 0x00
+#define SD20_RX_14_DELAY 0x08
+#define SD20_RX_SEL_MASK 0x08
+
+/* SD_PUSH_POINT_CTL */
+#define DDR_FIX_TX_CMD_DAT 0x00
+#define DDR_VAR_TX_CMD_DAT 0x80
+#define DDR_FIX_TX_DAT_14_TSU 0x00
+#define DDR_FIX_TX_DAT_12_TSU 0x40
+#define DDR_FIX_TX_CMD_NEG_EDGE 0x00
+#define DDR_FIX_TX_CMD_14_AHEAD 0x20
+#define SD20_TX_NEG_EDGE 0x00
+#define SD20_TX_14_AHEAD 0x10
+#define SD20_TX_SEL_MASK 0x10
+#define DDR_VAR_SDCLK_POL_SWAP 0x01
+
+/* SD_TRANSFER */
+#define SD_TRANSFER_START 0x80
+#define SD_TRANSFER_END 0x40
+#define SD_STAT_IDLE 0x20
+#define SD_TRANSFER_ERR 0x10
+/* SD Transfer Mode definition */
+#define SD_TM_NORMAL_WRITE 0x00
+#define SD_TM_AUTO_WRITE_3 0x01
+#define SD_TM_AUTO_WRITE_4 0x02
+#define SD_TM_AUTO_READ_3 0x05
+#define SD_TM_AUTO_READ_4 0x06
+#define SD_TM_CMD_RSP 0x08
+#define SD_TM_AUTO_WRITE_1 0x09
+#define SD_TM_AUTO_WRITE_2 0x0A
+#define SD_TM_NORMAL_READ 0x0C
+#define SD_TM_AUTO_READ_1 0x0D
+#define SD_TM_AUTO_READ_2 0x0E
+#define SD_TM_AUTO_TUNING 0x0F
+
+/* SD_VPTX_CTL / SD_VPRX_CTL */
+#define PHASE_CHANGE 0x80
+#define PHASE_NOT_RESET 0x40
+
+/* SD_DCMPS_TX_CTL / SD_DCMPS_RX_CTL */
+#define DCMPS_CHANGE 0x80
+#define DCMPS_CHANGE_DONE 0x40
+#define DCMPS_ERROR 0x20
+#define DCMPS_CURRENT_PHASE 0x1F
+
+/* SD Configure 1 Register */
+#define SD_CLK_DIVIDE_0 0x00
+#define SD_CLK_DIVIDE_256 0xC0
+#define SD_CLK_DIVIDE_128 0x80
+#define SD_BUS_WIDTH_1BIT 0x00
+#define SD_BUS_WIDTH_4BIT 0x01
+#define SD_BUS_WIDTH_8BIT 0x02
+#define SD_ASYNC_FIFO_NOT_RST 0x10
+#define SD_20_MODE 0x00
+#define SD_DDR_MODE 0x04
+#define SD_30_MODE 0x08
+
+#define SD_CLK_DIVIDE_MASK 0xC0
+
+/* SD_CMD_STATE */
+#define SD_CMD_IDLE 0x80
+
+/* SD_DATA_STATE */
+#define SD_DATA_IDLE 0x80
+
+/* DCM_DRP_CTL */
+#define DCM_RESET 0x08
+#define DCM_LOCKED 0x04
+#define DCM_208M 0x00
+#define DCM_TX 0x01
+#define DCM_RX 0x02
+
+/* DCM_DRP_TRIG */
+#define DRP_START 0x80
+#define DRP_DONE 0x40
+
+/* DCM_DRP_CFG */
+#define DRP_WRITE 0x80
+#define DRP_READ 0x00
+#define DCM_WRITE_ADDRESS_50 0x50
+#define DCM_WRITE_ADDRESS_51 0x51
+#define DCM_READ_ADDRESS_00 0x00
+#define DCM_READ_ADDRESS_51 0x51
+
+/* IRQSTAT0 */
+#define DMA_DONE_INT 0x80
+#define SUSPEND_INT 0x40
+#define LINK_RDY_INT 0x20
+#define LINK_DOWN_INT 0x10
+
+/* DMACTL */
+#define DMA_RST 0x80
+#define DMA_BUSY 0x04
+#define DMA_DIR_TO_CARD 0x00
+#define DMA_DIR_FROM_CARD 0x02
+#define DMA_EN 0x01
+#define DMA_128 (0 << 4)
+#define DMA_256 (1 << 4)
+#define DMA_512 (2 << 4)
+#define DMA_1024 (3 << 4)
+#define DMA_PACK_SIZE_MASK 0x30
+
+/* SSC_CTL1 */
+#define SSC_RSTB 0x80
+#define SSC_8X_EN 0x40
+#define SSC_FIX_FRAC 0x20
+#define SSC_SEL_1M 0x00
+#define SSC_SEL_2M 0x08
+#define SSC_SEL_4M 0x10
+#define SSC_SEL_8M 0x18
+
+/* SSC_CTL2 */
+#define SSC_DEPTH_MASK 0x07
+#define SSC_DEPTH_DISALBE 0x00
+#define SSC_DEPTH_4M 0x01
+#define SSC_DEPTH_2M 0x02
+#define SSC_DEPTH_1M 0x03
+#define SSC_DEPTH_500K 0x04
+#define SSC_DEPTH_250K 0x05
+
+/* System Clock Control Register */
+#define CLK_LOW_FREQ 0x01
+
+/* System Clock Divider Register */
+#define CLK_DIV_1 0x01
+#define CLK_DIV_2 0x02
+#define CLK_DIV_4 0x03
+#define CLK_DIV_8 0x04
+
+/* SD Configure 2 Register */
+#define SD_CALCULATE_CRC7 0x00
+#define SD_NO_CALCULATE_CRC7 0x80
+#define SD_CHECK_CRC16 0x00
+#define SD_NO_CHECK_CRC16 0x40
+#define SD_NO_CHECK_WAIT_CRC_TO 0x20
+#define SD_WAIT_BUSY_END 0x08
+#define SD_NO_WAIT_BUSY_END 0x00
+#define SD_CHECK_CRC7 0x00
+#define SD_NO_CHECK_CRC7 0x04
+#define SD_RSP_LEN_0 0x00
+#define SD_RSP_LEN_6 0x01
+#define SD_RSP_LEN_17 0x02
+/* SD/MMC Response Type Definition */
+#define SD_RSP_TYPE_R0 0x04
+#define SD_RSP_TYPE_R1 0x01
+#define SD_RSP_TYPE_R1b 0x09
+#define SD_RSP_TYPE_R2 0x02
+#define SD_RSP_TYPE_R3 0x05
+#define SD_RSP_TYPE_R4 0x05
+#define SD_RSP_TYPE_R5 0x01
+#define SD_RSP_TYPE_R6 0x01
+#define SD_RSP_TYPE_R7 0x01
+
+/* SD_CONFIURE3 */
+#define SD_RSP_80CLK_TIMEOUT_EN 0x01
+
+/* Card Transfer Reset Register */
+#define SPI_STOP 0x01
+#define XD_STOP 0x02
+#define SD_STOP 0x04
+#define MS_STOP 0x08
+#define SPI_CLR_ERR 0x10
+#define XD_CLR_ERR 0x20
+#define SD_CLR_ERR 0x40
+#define MS_CLR_ERR 0x80
+
+/* Card Data Source Register */
+#define PINGPONG_BUFFER 0x01
+#define RING_BUFFER 0x00
+
+/* Card Power Control Register */
+#define PMOS_STRG_MASK 0x10
+#define PMOS_STRG_800mA 0x10
+#define PMOS_STRG_400mA 0x00
+#define SD_POWER_OFF 0x03
+#define SD_PARTIAL_POWER_ON 0x01
+#define SD_POWER_ON 0x00
+#define SD_POWER_MASK 0x03
+
+/* PWR_GATE_CTRL */
+#define PWR_GATE_EN 0x01
+#define LDO3318_PWR_MASK 0x06
+#define LDO_ON 0x00
+#define LDO_SUSPEND 0x04
+#define LDO_OFF 0x06
+
+/* CARD_CLK_SOURCE */
+#define CRC_FIX_CLK (0x00 << 0)
+#define CRC_VAR_CLK0 (0x01 << 0)
+#define CRC_VAR_CLK1 (0x02 << 0)
+#define SD30_FIX_CLK (0x00 << 2)
+#define SD30_VAR_CLK0 (0x01 << 2)
+#define SD30_VAR_CLK1 (0x02 << 2)
+#define SAMPLE_FIX_CLK (0x00 << 4)
+#define SAMPLE_VAR_CLK0 (0x01 << 4)
+#define SAMPLE_VAR_CLK1 (0x02 << 4)
+
+#define SD_CFG1 0xFDA0
+#define SD_CFG2 0xFDA1
+#define SD_CFG3 0xFDA2
+#define SD_STAT1 0xFDA3
+#define SD_STAT2 0xFDA4
+#define SD_BUS_STAT 0xFDA5
+#define SD_PAD_CTL 0xFDA6
+#define SD_SAMPLE_POINT_CTL 0xFDA7
+#define SD_PUSH_POINT_CTL 0xFDA8
+#define SD_CMD0 0xFDA9
+#define SD_CMD1 0xFDAA
+#define SD_CMD2 0xFDAB
+#define SD_CMD3 0xFDAC
+#define SD_CMD4 0xFDAD
+#define SD_CMD5 0xFDAE
+#define SD_BYTE_CNT_L 0xFDAF
+#define SD_BYTE_CNT_H 0xFDB0
+#define SD_BLOCK_CNT_L 0xFDB1
+#define SD_BLOCK_CNT_H 0xFDB2
+#define SD_TRANSFER 0xFDB3
+#define SD_CMD_STATE 0xFDB5
+#define SD_DATA_STATE 0xFDB6
+
+#define SRCTL 0xFC13
+
+#define DCM_DRP_CTL 0xFC23
+#define DCM_DRP_TRIG 0xFC24
+#define DCM_DRP_CFG 0xFC25
+#define DCM_DRP_WR_DATA_L 0xFC26
+#define DCM_DRP_WR_DATA_H 0xFC27
+#define DCM_DRP_RD_DATA_L 0xFC28
+#define DCM_DRP_RD_DATA_H 0xFC29
+#define SD_VPCLK0_CTL 0xFC2A
+#define SD_VPCLK1_CTL 0xFC2B
+#define SD_DCMPS0_CTL 0xFC2C
+#define SD_DCMPS1_CTL 0xFC2D
+#define SD_VPTX_CTL SD_VPCLK0_CTL
+#define SD_VPRX_CTL SD_VPCLK1_CTL
+#define SD_DCMPS_TX_CTL SD_DCMPS0_CTL
+#define SD_DCMPS_RX_CTL SD_DCMPS1_CTL
+#define CARD_CLK_SOURCE 0xFC2E
+
+#define CARD_PWR_CTL 0xFD50
+#define CARD_CLK_SWITCH 0xFD51
+#define CARD_SHARE_MODE 0xFD52
+#define CARD_DRIVE_SEL 0xFD53
+#define CARD_STOP 0xFD54
+#define CARD_OE 0xFD55
+#define CARD_AUTO_BLINK 0xFD56
+#define CARD_GPIO_DIR 0xFD57
+#define CARD_GPIO 0xFD58
+
+#define CARD_DATA_SOURCE 0xFD5B
+#define CARD_SELECT 0xFD5C
+#define SD30_DRIVE_SEL 0xFD5E
+
+#define CARD_CLK_EN 0xFD69
+
+#define SDIO_CTRL 0xFD6B
+
+#define FPDCTL 0xFC00
+#define PDINFO 0xFC01
+
+#define CLK_CTL 0xFC02
+#define CLK_DIV 0xFC03
+#define CLK_SEL 0xFC04
+
+#define SSC_DIV_N_0 0xFC0F
+#define SSC_DIV_N_1 0xFC10
+#define SSC_CTL1 0xFC11
+#define SSC_CTL2 0xFC12
+
+#define RCCTL 0xFC14
+
+#define FPGA_PULL_CTL 0xFC1D
+
+#define CARD_PULL_CTL1 0xFD60
+#define CARD_PULL_CTL2 0xFD61
+#define CARD_PULL_CTL3 0xFD62
+#define CARD_PULL_CTL4 0xFD63
+#define CARD_PULL_CTL5 0xFD64
+#define CARD_PULL_CTL6 0xFD65
+
+/* PCI Express Related Registers */
+#define IRQEN0 0xFE20
+#define IRQSTAT0 0xFE21
+#define IRQEN1 0xFE22
+#define IRQSTAT1 0xFE23
+#define TLPRIEN 0xFE24
+#define TLPRISTAT 0xFE25
+#define TLPTIEN 0xFE26
+#define TLPTISTAT 0xFE27
+#define DMATC0 0xFE28
+#define DMATC1 0xFE29
+#define DMATC2 0xFE2A
+#define DMATC3 0xFE2B
+#define DMACTL 0xFE2C
+#define BCTL 0xFE2D
+#define RBBC0 0xFE2E
+#define RBBC1 0xFE2F
+#define RBDAT 0xFE30
+#define RBCTL 0xFE34
+#define CFGADDR0 0xFE35
+#define CFGADDR1 0xFE36
+#define CFGDATA0 0xFE37
+#define CFGDATA1 0xFE38
+#define CFGDATA2 0xFE39
+#define CFGDATA3 0xFE3A
+#define CFGRWCTL 0xFE3B
+#define PHYRWCTL 0xFE3C
+#define PHYDATA0 0xFE3D
+#define PHYDATA1 0xFE3E
+#define PHYADDR 0xFE3F
+#define MSGRXDATA0 0xFE40
+#define MSGRXDATA1 0xFE41
+#define MSGRXDATA2 0xFE42
+#define MSGRXDATA3 0xFE43
+#define MSGTXDATA0 0xFE44
+#define MSGTXDATA1 0xFE45
+#define MSGTXDATA2 0xFE46
+#define MSGTXDATA3 0xFE47
+#define MSGTXCTL 0xFE48
+#define PETXCFG 0xFE49
+
+#define CDRESUMECTL 0xFE52
+#define WAKE_SEL_CTL 0xFE54
+#define PME_FORCE_CTL 0xFE56
+#define ASPM_FORCE_CTL 0xFE57
+#define PM_CLK_FORCE_CTL 0xFE58
+#define PERST_GLITCH_WIDTH 0xFE5C
+#define CHANGE_LINK_STATE 0xFE5B
+#define RESET_LOAD_REG 0xFE5E
+#define EFUSE_CONTENT 0xFE5F
+#define HOST_SLEEP_STATE 0xFE60
+#define MAIN_PWR_OFF_CTL 0xFE70 /* RTS5208 */
+#define SDIO_CFG 0xFE70 /* RTS5209 */
+
+#define NFTS_TX_CTRL 0xFE72
+
+#define PWR_GATE_CTRL 0xFE75
+#define PWD_SUSPEND_EN 0xFE76
+
+/* Memory mapping */
+#define SRAM_BASE 0xE600
+#define RBUF_BASE 0xF400
+#define PPBUF_BASE1 0xF800
+#define PPBUF_BASE2 0xFA00
+#define IMAGE_FLAG_ADDR0 0xCE80
+#define IMAGE_FLAG_ADDR1 0xCE81
+
+#define rtsx_pci_init_cmd(pcr) ((pcr)->ci = 0)
+
+struct reg_val {
+ /* Enable signal for regulator3318 */
+ u8 ldo_pwr_on;
+ u8 ldo_pwr_off;
+ u8 ldo_pwr_suspend;
+};
+
+struct rtsx_pcr;
+
+struct pcr_ops {
+ u8 (*get_ic_version)(struct rtsx_pcr *pcr);
+ int (*extra_init_hw)(struct rtsx_pcr *pcr);
+ int (*optimize_phy)(struct rtsx_pcr *pcr);
+ int (*turn_on_led)(struct rtsx_pcr *pcr);
+ int (*turn_off_led)(struct rtsx_pcr *pcr);
+ int (*enable_auto_blink)(struct rtsx_pcr *pcr);
+ int (*disable_auto_blink)(struct rtsx_pcr *pcr);
+};
+
+enum PDEV_STAT {PDEV_STAT_IDLE, PDEV_STAT_RUN};
+
+struct rtsx_pcr {
+ struct pci_dev *pci;
+ unsigned int id;
+
+ /* pci resources */
+ unsigned long addr;
+ void __iomem *remap_addr;
+ int irq;
+
+ /* host reserved buffer */
+ void *rtsx_resv_buf;
+ dma_addr_t rtsx_resv_buf_addr;
+
+ void *host_cmds_ptr;
+ dma_addr_t host_cmds_addr;
+ int ci;
+
+ void *host_sg_tbl_ptr;
+ dma_addr_t host_sg_tbl_addr;
+ int sgi;
+
+ u32 int_reg;
+ char trans_result;
+ char trans_state;
+
+ int need_reset;
+ int need_release;
+
+ struct delayed_work carddet_work;
+ struct timer_list idle_timer;
+ struct work_struct idle_work;
+
+ spinlock_t lock;
+ struct mutex pcr_mutex;
+ struct completion *done;
+ struct completion *finish_me;
+
+ bool remove_pci;
+ bool msi_en;
+
+#define EXTRA_CAPS_SD_SDR50 (1 << 0)
+#define EXTRA_CAPS_SD_SDR104 (1 << 1)
+#define EXTRA_CAPS_SD_DDR50 (1 << 2)
+#define EXTRA_CAPS_MMC_HSDDR (1 << 3)
+#define EXTRA_CAPS_MMC_HS200 (1 << 4)
+#define EXTRA_CAPS_MMC_8BIT (1 << 5)
+ u32 extra_caps;
+
+#define IC_VER_A 0
+#define IC_VER_B 1
+#define IC_VER_C 2
+#define IC_VER_D 3
+ u8 ic_version;
+
+ struct reg_val rval;
+ const u32 *sd_pull_ctl_enable_tbl;
+ const u32 *sd_pull_ctl_disable_tbl;
+
+ const struct pcr_ops *ops;
+ enum PDEV_STAT state;
+
+ int num_slots;
+ struct rtsx_slot *slots;
+};
+
+#define CHK_PCI_PID(pcr, pid) ((pcr)->pci->device == (pid))
+#define PCI_VID(pcr) ((pcr)->pci->vendor)
+#define PCI_PID(pcr) ((pcr)->pci->device)
+
+void rtsx_pci_start_run(struct rtsx_pcr *pcr);
+int rtsx_pci_write_register(struct rtsx_pcr *pcr, u16 addr, u8 mask, u8 data);
+int rtsx_pci_read_register(struct rtsx_pcr *pcr, u16 addr, u8 *data);
+int rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val);
+int rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val);
+void rtsx_pci_stop_cmd(struct rtsx_pcr *pcr);
+void rtsx_pci_add_cmd(struct rtsx_pcr *pcr,
+ u8 cmd_type, u16 reg_addr, u8 mask, u8 data);
+void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr);
+int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout);
+int rtsx_pci_transfer_data(struct rtsx_pcr *pcr,
+ void *buf, size_t len, int use_sg, int read, int timeout);
+int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len);
+int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len);
+int rtsx_pci_sd_pull_ctl_enable(struct rtsx_pcr *pcr);
+int rtsx_pci_sd_pull_ctl_disable(struct rtsx_pcr *pcr);
+int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
+ u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk);
+void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr);
+
+static inline u8 *rtsx_pci_get_cmd_data(struct rtsx_pcr *pcr)
+{
+ return (u8 *)(pcr->host_cmds_ptr);
+}
+
+#endif
--
1.7.9.5
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v2 2/2] drivers/mmc: Add realtek pcie sdmmc host driver
2012-08-14 10:40 [PATCH v2 0/2] Add modules to support realtek PCIE card reader wei_wang
2012-08-14 10:40 ` [PATCH v2 1/2] drivers/mfd: Add realtek pcie card reader driver wei_wang
@ 2012-08-14 10:40 ` wei_wang
2012-08-14 15:05 ` [PATCH v2 0/2] Add modules to support realtek PCIE card reader Borislav Petkov
2 siblings, 0 replies; 7+ messages in thread
From: wei_wang @ 2012-08-14 10:40 UTC (permalink / raw)
To: gregkh, devel, linux-kernel, linux-mmc, cjb, arnd, sameo; +Cc: bp, Wei WANG
From: Wei WANG <wei_wang@realsil.com.cn>
Realtek PCI-E SD/MMC card host driver is used to access SD/MMC card,
with the help of Realtek PCI-E card reader MFD driver.
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/mmc/host/Kconfig | 7 +
drivers/mmc/host/Makefile | 2 +
drivers/mmc/host/rtsx_pci_sdmmc.c | 1348 +++++++++++++++++++++++++++++++++++++
3 files changed, 1357 insertions(+)
create mode 100644 drivers/mmc/host/rtsx_pci_sdmmc.c
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index aa131b3..d6f0c01 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -612,3 +612,10 @@ config MMC_USHC
Note: These controllers only support SDIO cards and do not
support MMC or SD memory cards.
+
+config MMC_REALTEK_PCI
+ tristate "Realtek PCI-E SD/MMC Card Interface Driver"
+ depends on MFD_RTSX_PCI
+ help
+ Say Y here to include driver code to support SD/MMC card interface
+ of Realtek PCI-E driver-based card reader
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 8922b06..4679ba3 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -45,6 +45,8 @@ obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o
obj-$(CONFIG_MMC_VUB300) += vub300.o
obj-$(CONFIG_MMC_USHC) += ushc.o
+obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o
+
obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o
obj-$(CONFIG_MMC_SDHCI_ESDHC_IMX) += sdhci-esdhc-imx.o
diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c
new file mode 100644
index 0000000..a71abbf
--- /dev/null
+++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
@@ -0,0 +1,1348 @@
+/* Realtek PCI-Express SD/MMC Card Interface driver
+ *
+ * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
+ */
+
+#include <linux/module.h>
+#include <linux/highmem.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/sd.h>
+#include <linux/mmc/card.h>
+#include <linux/mfd/rtsx_pci.h>
+#include <asm/unaligned.h>
+
+#define MAX_RW_REG_CNT 1024
+
+#define RTSX_MAX_BLOCK_COUNT 65536
+#define RTSX_MAX_BLOCK_LENGTH 2048
+
+/* SD Tuning Data Structure
+ * Record continuous timing phase path
+ */
+struct timing_phase_path {
+ int start;
+ int end;
+ int mid;
+ int len;
+};
+
+struct realtek_pci_sdmmc {
+ struct platform_device *pdev;
+ struct rtsx_pcr *pcr;
+ struct mmc_host *mmc;
+ struct mmc_request *mrq;
+
+ struct mutex host_mutex;
+
+ bool eject;
+ bool initial_mode;
+ bool ddr_mode;
+};
+
+static inline struct device *sdmmc_dev(struct realtek_pci_sdmmc *host)
+{
+ return &(host->pdev->dev);
+}
+
+static inline void sd_clear_error(struct realtek_pci_sdmmc *host)
+{
+ rtsx_pci_write_register(host->pcr, CARD_STOP,
+ SD_STOP | SD_CLR_ERR, SD_STOP | SD_CLR_ERR);
+}
+
+#ifdef CONFIG_MMC_DEBUG
+
+static void sd_print_debug_regs(struct realtek_pci_sdmmc *host)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ u16 i;
+ u8 *ptr;
+
+ /* Print SD host internal registers */
+ rtsx_pci_init_cmd(pcr);
+ for (i = 0xFDA0; i <= 0xFDAE; i++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0);
+ for (i = 0xFD52; i <= 0xFD69; i++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0);
+ rtsx_pci_send_cmd(pcr, 100);
+
+ ptr = rtsx_pci_get_cmd_data(pcr);
+ for (i = 0xFDA0; i <= 0xFDAE; i++)
+ dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
+ for (i = 0xFD52; i <= 0xFD69; i++)
+ dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
+}
+
+#else
+
+#define sd_print_debug_regs(host)
+
+#endif
+
+static int sd_read_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt,
+ u8 *buf, int buf_len, int timeout)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err, i;
+ u8 trans_mode;
+
+ dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d\n",
+ __func__, cmd[0] - 0x40);
+
+ if (!buf)
+ buf_len = 0;
+
+ if ((cmd[0] & 0x3F) == MMC_SEND_TUNING_BLOCK)
+ trans_mode = SD_TM_AUTO_TUNING;
+ else
+ trans_mode = SD_TM_NORMAL_READ;
+
+ rtsx_pci_init_cmd(pcr);
+
+ for (i = 0; i < 5; i++)
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ SD_CMD0 + i, 0xFF, cmd[i]);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L,
+ 0xFF, (u8)byte_cnt);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H,
+ 0xFF, (u8)(byte_cnt >> 8));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF,
+ SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
+ SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
+ if (trans_mode != SD_TM_AUTO_TUNING)
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER,
+ 0xFF, trans_mode | SD_TRANSFER_START);
+ rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
+ SD_TRANSFER_END, SD_TRANSFER_END);
+
+ err = rtsx_pci_send_cmd(pcr, timeout);
+ if (err < 0) {
+ sd_print_debug_regs(host);
+ dev_dbg(sdmmc_dev(host),
+ "rtsx_pci_send_cmd fail (err = %d)\n", err);
+ return err;
+ }
+
+ if (buf && buf_len) {
+ err = rtsx_pci_read_ppbuf(pcr, buf, buf_len);
+ if (err < 0) {
+ dev_dbg(sdmmc_dev(host),
+ "rtsx_read_ppbuf fail (err = %d)\n", err);
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int sd_write_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt,
+ u8 *buf, int buf_len, int timeout)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err, i;
+ u8 trans_mode;
+
+ if (!buf)
+ buf_len = 0;
+
+ if (buf && buf_len) {
+ err = rtsx_pci_write_ppbuf(pcr, buf, buf_len);
+ if (err < 0) {
+ dev_dbg(sdmmc_dev(host),
+ "rtsx_write_ppbuf fail (err = %d)\n", err);
+ return err;
+ }
+ }
+
+ if (cmd)
+ trans_mode = SD_TM_AUTO_WRITE_2;
+ else
+ trans_mode = SD_TM_AUTO_WRITE_3;
+
+ rtsx_pci_init_cmd(pcr);
+
+ if (cmd) {
+ dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d\n", __func__,
+ cmd[0] - 0x40);
+
+ for (i = 0; i < 5; i++)
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ SD_CMD0 + i, 0xFF, cmd[i]);
+ }
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L,
+ 0xFF, (u8)byte_cnt);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H,
+ 0xFF, (u8)(byte_cnt >> 8));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF,
+ SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
+ SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
+ trans_mode | SD_TRANSFER_START);
+ rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
+ SD_TRANSFER_END, SD_TRANSFER_END);
+
+ err = rtsx_pci_send_cmd(pcr, timeout);
+ if (err < 0) {
+ sd_print_debug_regs(host);
+ dev_dbg(sdmmc_dev(host),
+ "rtsx_pci_send_cmd fail (err = %d)\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
+ struct mmc_command *cmd)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ u8 cmd_idx = (u8)cmd->opcode;
+ u32 arg = cmd->arg;
+ int err = 0;
+ int timeout = 100;
+ int i;
+ u8 *ptr;
+ int stat_idx = 0;
+ u8 rsp_type;
+ int rsp_len = 5;
+
+ dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
+ __func__, cmd_idx, arg);
+
+ /* Response type */
+ /* R0
+ * R1, R5, R6, R7
+ * R1b
+ * R2
+ * R3, R4
+ */
+ switch (mmc_resp_type(cmd)) {
+ case MMC_RSP_NONE:
+ rsp_type = SD_RSP_TYPE_R0;
+ rsp_len = 0;
+ break;
+ case MMC_RSP_R1:
+ rsp_type = SD_RSP_TYPE_R1;
+ break;
+ case MMC_RSP_R1B:
+ rsp_type = SD_RSP_TYPE_R1b;
+ break;
+ case MMC_RSP_R2:
+ rsp_type = SD_RSP_TYPE_R2;
+ rsp_len = 16;
+ break;
+ case MMC_RSP_R3:
+ rsp_type = SD_RSP_TYPE_R3;
+ break;
+ default:
+ dev_dbg(sdmmc_dev(host), "cmd->flag is not valid\n");
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (rsp_type == SD_RSP_TYPE_R1b)
+ timeout = 3000;
+
+ if (cmd->opcode == SD_SWITCH_VOLTAGE) {
+ err = rtsx_pci_write_register(pcr, SD_BUS_STAT,
+ 0xFF, SD_CLK_TOGGLE_EN);
+ if (err < 0)
+ goto out;
+ }
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD0, 0xFF, 0x40 | cmd_idx);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD1, 0xFF, (u8)(arg >> 24));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD2, 0xFF, (u8)(arg >> 16));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD3, 0xFF, (u8)(arg >> 8));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD4, 0xFF, (u8)arg);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF, rsp_type);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
+ 0x01, PINGPONG_BUFFER);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER,
+ 0xFF, SD_TM_CMD_RSP | SD_TRANSFER_START);
+ rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
+ SD_TRANSFER_END | SD_STAT_IDLE,
+ SD_TRANSFER_END | SD_STAT_IDLE);
+
+ if (rsp_type == SD_RSP_TYPE_R2) {
+ /* Read data from ping-pong buffer */
+ for (i = PPBUF_BASE2; i < PPBUF_BASE2 + 16; i++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0);
+ stat_idx = 16;
+ } else if (rsp_type != SD_RSP_TYPE_R0) {
+ /* Read data from SD_CMDx registers */
+ for (i = SD_CMD0; i <= SD_CMD4; i++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0);
+ stat_idx = 5;
+ }
+
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, SD_STAT1, 0, 0);
+
+ err = rtsx_pci_send_cmd(pcr, timeout);
+ if (err < 0) {
+ sd_print_debug_regs(host);
+ sd_clear_error(host);
+ dev_dbg(sdmmc_dev(host),
+ "rtsx_pci_send_cmd error (err = %d)\n", err);
+ goto out;
+ }
+
+ if (rsp_type == SD_RSP_TYPE_R0) {
+ err = 0;
+ goto out;
+ }
+
+ /* Eliminate returned value of CHECK_REG_CMD */
+ ptr = rtsx_pci_get_cmd_data(pcr) + 1;
+
+ /* Check (Start,Transmission) bit of Response */
+ if ((ptr[0] & 0xC0) != 0) {
+ err = -EILSEQ;
+ dev_dbg(sdmmc_dev(host), "Invalid response bit\n");
+ goto out;
+ }
+
+ /* Check CRC7 */
+ if (!(rsp_type & SD_NO_CHECK_CRC7)) {
+ if (ptr[stat_idx] & SD_CRC7_ERR) {
+ err = -EILSEQ;
+ dev_dbg(sdmmc_dev(host), "CRC7 error\n");
+ goto out;
+ }
+ }
+
+ if (rsp_type == SD_RSP_TYPE_R2) {
+ for (i = 0; i < 4; i++) {
+ cmd->resp[i] = get_unaligned_be32(ptr + 1 + i * 4);
+ dev_dbg(sdmmc_dev(host), "cmd->resp[%d] = 0x%08x\n",
+ i, cmd->resp[i]);
+ }
+ } else {
+ cmd->resp[0] = get_unaligned_be32(ptr + 1);
+ dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n",
+ cmd->resp[0]);
+ }
+
+out:
+ cmd->error = err;
+}
+
+static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ struct mmc_host *mmc = host->mmc;
+ struct mmc_card *card = mmc->card;
+ struct mmc_data *data = mrq->data;
+ int uhs = mmc_sd_card_uhs(card);
+ int read = (data->flags & MMC_DATA_READ) ? 1 : 0;
+ u8 cfg2, trans_mode;
+ int err;
+ size_t data_len = data->blksz * data->blocks;
+
+ if (read) {
+ cfg2 = SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
+ SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0;
+ trans_mode = SD_TM_AUTO_READ_3;
+ } else {
+ cfg2 = SD_NO_CALCULATE_CRC7 | SD_CHECK_CRC16 |
+ SD_NO_WAIT_BUSY_END | SD_NO_CHECK_CRC7 | SD_RSP_LEN_0;
+ trans_mode = SD_TM_AUTO_WRITE_3;
+ }
+
+ if (!uhs)
+ cfg2 |= SD_NO_CHECK_WAIT_CRC_TO;
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0x00);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, 0x02);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L,
+ 0xFF, (u8)data->blocks);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H,
+ 0xFF, (u8)(data->blocks >> 8));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ CARD_DATA_SOURCE, 0x01, RING_BUFFER);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0,
+ DMA_DONE_INT, DMA_DONE_INT);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC3,
+ 0xFF, (u8)(data_len >> 24));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC2,
+ 0xFF, (u8)(data_len >> 16));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC1,
+ 0xFF, (u8)(data_len >> 8));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC0, 0xFF, (u8)data_len);
+ if (read) {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL,
+ 0x03 | DMA_PACK_SIZE_MASK,
+ DMA_DIR_FROM_CARD | DMA_EN | DMA_512);
+ } else {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL,
+ 0x03 | DMA_PACK_SIZE_MASK,
+ DMA_DIR_TO_CARD | DMA_EN | DMA_512);
+ }
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
+ 0x01, RING_BUFFER);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
+ trans_mode | SD_TRANSFER_START);
+ rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
+ SD_TRANSFER_END, SD_TRANSFER_END);
+
+ rtsx_pci_send_cmd_no_wait(pcr);
+
+ err = rtsx_pci_transfer_data(pcr, data->sg,
+ data_len, data->sg_len, read, 10000);
+ if (err < 0) {
+ sd_clear_error(host);
+
+ return err;
+ }
+
+ return 0;
+}
+
+static inline void sd_enable_initial_mode(struct realtek_pci_sdmmc *host)
+{
+ rtsx_pci_write_register(host->pcr, SD_CFG1,
+ SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_128);
+}
+
+static inline void sd_disable_initial_mode(struct realtek_pci_sdmmc *host)
+{
+ rtsx_pci_write_register(host->pcr, SD_CFG1,
+ SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_0);
+}
+
+static void sd_normal_rw(struct realtek_pci_sdmmc *host,
+ struct mmc_request *mrq)
+{
+ struct mmc_command *cmd = mrq->cmd;
+ struct mmc_data *data = mrq->data;
+ u8 _cmd[5], *buf;
+
+ _cmd[0] = 0x40 | (u8)cmd->opcode;
+ put_unaligned_be32(cmd->arg, (u32 *)(&_cmd[1]));
+
+ buf = kzalloc(data->blksz, GFP_NOIO);
+ if (!buf) {
+ cmd->error = -ENOMEM;
+ return;
+ }
+
+ if (data->flags & MMC_DATA_READ) {
+ if (host->initial_mode)
+ sd_disable_initial_mode(host);
+
+ cmd->error = sd_read_data(host, _cmd, (u16)data->blksz, buf,
+ data->blksz, 200);
+
+ if (host->initial_mode)
+ sd_enable_initial_mode(host);
+
+ sg_copy_from_buffer(data->sg, data->sg_len, buf, data->blksz);
+ } else {
+ sg_copy_to_buffer(data->sg, data->sg_len, buf, data->blksz);
+
+ cmd->error = sd_write_data(host, _cmd, (u16)data->blksz, buf,
+ data->blksz, 200);
+ }
+
+ kfree(buf);
+}
+
+static int sd_change_phase(struct realtek_pci_sdmmc *host, u8 sample_point)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+
+ dev_dbg(sdmmc_dev(host), "%s: sample_point = %d\n",
+ __func__, sample_point);
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CHANGE_CLK, CHANGE_CLK);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPRX_CTL, 0x1F, sample_point);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
+ PHASE_NOT_RESET, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,
+ PHASE_NOT_RESET, PHASE_NOT_RESET);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CHANGE_CLK, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1,
+ SD_ASYNC_FIFO_NOT_RST, 0);
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static u8 sd_search_final_phase(struct realtek_pci_sdmmc *host, u32 phase_map)
+{
+ struct timing_phase_path path[MAX_PHASE + 1];
+ int i, j, cont_path_cnt;
+ int new_block, max_len, final_path_idx;
+ u8 final_phase = 0xFF;
+
+ /* Parse phase_map, take it as a bit-ring */
+ cont_path_cnt = 0;
+ new_block = 1;
+ j = 0;
+ for (i = 0; i < MAX_PHASE + 1; i++) {
+ if (phase_map & (1 << i)) {
+ if (new_block) {
+ new_block = 0;
+ j = cont_path_cnt++;
+ path[j].start = i;
+ path[j].end = i;
+ } else {
+ path[j].end = i;
+ }
+ } else {
+ new_block = 1;
+ if (cont_path_cnt) {
+ /* Calculate path length and middle point */
+ int idx = cont_path_cnt - 1;
+ path[idx].len =
+ path[idx].end - path[idx].start + 1;
+ path[idx].mid =
+ path[idx].start + path[idx].len / 2;
+ }
+ }
+ }
+
+ if (cont_path_cnt == 0) {
+ dev_dbg(sdmmc_dev(host), "No continuous phase path\n");
+ goto finish;
+ } else {
+ /* Calculate last continuous path length and middle point */
+ int idx = cont_path_cnt - 1;
+ path[idx].len = path[idx].end - path[idx].start + 1;
+ path[idx].mid = path[idx].start + path[idx].len / 2;
+ }
+
+ /* Connect the first continuous path
+ * and the last one if they are adjacent */
+ if (!path[0].start && (path[cont_path_cnt - 1].end == MAX_PHASE)) {
+ /* Using negative index */
+ path[0].start = path[cont_path_cnt - 1].start - MAX_PHASE - 1;
+ path[0].len += path[cont_path_cnt - 1].len;
+ path[0].mid = path[0].start + path[0].len / 2;
+ /* Convert negative middle point index to positive one */
+ if (path[0].mid < 0)
+ path[0].mid += MAX_PHASE + 1;
+ cont_path_cnt--;
+ }
+
+ /* Choose the longest continuous phase path */
+ max_len = 0;
+ final_phase = 0;
+ final_path_idx = 0;
+ for (i = 0; i < cont_path_cnt; i++) {
+ if (path[i].len > max_len) {
+ max_len = path[i].len;
+ final_phase = (u8)path[i].mid;
+ final_path_idx = i;
+ }
+
+ dev_dbg(sdmmc_dev(host), "path[%d].start = %d\n",
+ i, path[i].start);
+ dev_dbg(sdmmc_dev(host), "path[%d].end = %d\n",
+ i, path[i].end);
+ dev_dbg(sdmmc_dev(host), "path[%d].len = %d\n",
+ i, path[i].len);
+ dev_dbg(sdmmc_dev(host), "path[%d].mid = %d\n",
+ i, path[i].mid);
+ }
+
+finish:
+ dev_dbg(sdmmc_dev(host), "Final choosen phase: %d\n", final_phase);
+ return final_phase;
+}
+
+static void sd_wait_data_idle(struct realtek_pci_sdmmc *host)
+{
+ int err, i;
+ u8 val = 0;
+
+ for (i = 0; i < 100; i++) {
+ err = rtsx_pci_read_register(host->pcr, SD_DATA_STATE, &val);
+ if (val & SD_DATA_IDLE)
+ return;
+
+ udelay(100);
+ }
+}
+
+static int sd_tuning_rx_cmd(struct realtek_pci_sdmmc *host,
+ u8 opcode, u8 sample_point)
+{
+ int err;
+ u8 cmd[5] = {0};
+
+ err = sd_change_phase(host, sample_point);
+ if (err < 0)
+ return err;
+
+ cmd[0] = 0x40 | opcode;
+ err = sd_read_data(host, cmd, 0x40, NULL, 0, 100);
+ if (err < 0) {
+ /* Wait till SD DATA IDLE */
+ sd_wait_data_idle(host);
+ sd_clear_error(host);
+ return err;
+ }
+
+ return 0;
+}
+
+static int sd_tuning_phase(struct realtek_pci_sdmmc *host,
+ u8 opcode, u32 *phase_map)
+{
+ int err, i;
+ u32 raw_phase_map = 0;
+
+ for (i = MAX_PHASE; i >= 0; i--) {
+ err = sd_tuning_rx_cmd(host, opcode, (u8)i);
+ if (err == 0)
+ raw_phase_map |= 1 << i;
+ }
+
+ if (phase_map)
+ *phase_map = raw_phase_map;
+
+ return 0;
+}
+
+static int sd_tuning_rx(struct realtek_pci_sdmmc *host, u8 opcode)
+{
+ int err, i;
+ u32 raw_phase_map[RX_TUNING_CNT] = {0}, phase_map;
+ u8 final_phase;
+
+ for (i = 0; i < RX_TUNING_CNT; i++) {
+ err = sd_tuning_phase(host, opcode, &(raw_phase_map[i]));
+ if (err < 0)
+ return err;
+
+ if (raw_phase_map[i] == 0)
+ break;
+ }
+
+ phase_map = 0xFFFFFFFF;
+ for (i = 0; i < RX_TUNING_CNT; i++) {
+ dev_dbg(sdmmc_dev(host), "RX raw_phase_map[%d] = 0x%08x\n",
+ i, raw_phase_map[i]);
+ phase_map &= raw_phase_map[i];
+ }
+ dev_dbg(sdmmc_dev(host), "RX phase_map = 0x%08x\n", phase_map);
+
+ if (phase_map) {
+ final_phase = sd_search_final_phase(host, phase_map);
+ if (final_phase == 0xFF)
+ return -EINVAL;
+
+ err = sd_change_phase(host, final_phase);
+ if (err < 0)
+ return err;
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct realtek_pci_sdmmc *host = mmc_priv(mmc);
+ struct rtsx_pcr *pcr = host->pcr;
+ struct mmc_command *cmd = mrq->cmd;
+ struct mmc_data *data = mrq->data;
+ unsigned int data_size = 0;
+
+ if (host->eject) {
+ cmd->error = -ENOMEDIUM;
+ goto finish;
+ }
+
+ mutex_lock(&pcr->pcr_mutex);
+
+ rtsx_pci_start_run(pcr);
+
+ mutex_lock(&host->host_mutex);
+ host->mrq = mrq;
+ mutex_unlock(&host->host_mutex);
+
+ if (mrq->data)
+ data_size = data->blocks * data->blksz;
+
+ if (!data_size || mmc_op_multi(cmd->opcode) ||
+ (cmd->opcode == MMC_READ_SINGLE_BLOCK) ||
+ (cmd->opcode == MMC_WRITE_BLOCK)) {
+ sd_send_cmd_get_rsp(host, cmd);
+
+ if (!cmd->error && data_size) {
+ sd_rw_multi(host, mrq);
+
+ if (mmc_op_multi(cmd->opcode) && mrq->stop)
+ sd_send_cmd_get_rsp(host, mrq->stop);
+ }
+ } else {
+ sd_normal_rw(host, mrq);
+ }
+
+ if (mrq->data) {
+ if (cmd->error || data->error)
+ data->bytes_xfered = 0;
+ else
+ data->bytes_xfered = data->blocks * data->blksz;
+ }
+
+ mutex_unlock(&pcr->pcr_mutex);
+
+finish:
+ if (cmd->error)
+ dev_dbg(sdmmc_dev(host), "cmd->error = %d\n", cmd->error);
+
+ mutex_lock(&host->host_mutex);
+ host->mrq = NULL;
+ mutex_unlock(&host->host_mutex);
+
+ mmc_request_done(mmc, mrq);
+}
+
+static int sd_set_bus_width(struct realtek_pci_sdmmc *host,
+ unsigned char bus_width)
+{
+ int err = 0;
+ u8 width[] = {
+ [MMC_BUS_WIDTH_1] = SD_BUS_WIDTH_1BIT,
+ [MMC_BUS_WIDTH_4] = SD_BUS_WIDTH_4BIT,
+ [MMC_BUS_WIDTH_8] = SD_BUS_WIDTH_8BIT,
+ };
+
+ if (bus_width <= MMC_BUS_WIDTH_8)
+ err = rtsx_pci_write_register(host->pcr, SD_CFG1,
+ 0x03, width[bus_width]);
+
+ return err;
+}
+
+static int sd_power_on(struct realtek_pci_sdmmc *host)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+
+ rtsx_pci_init_cmd(pcr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE,
+ CARD_SHARE_MASK, CARD_SHARE_48_SD);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN,
+ SD_CLK_EN, SD_CLK_EN);
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ err = rtsx_pci_sd_pull_ctl_enable(pcr);
+ if (err < 0)
+ return err;
+
+ rtsx_pci_init_cmd(pcr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
+ SD_POWER_MASK, SD_PARTIAL_POWER_ON);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
+ LDO3318_PWR_MASK, pcr->rval.ldo_pwr_suspend);
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ /* To avoid too large in-rush current */
+ udelay(150);
+
+ rtsx_pci_init_cmd(pcr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
+ SD_POWER_MASK, SD_POWER_ON);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
+ LDO3318_PWR_MASK, pcr->rval.ldo_pwr_on);
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ err = rtsx_pci_write_register(pcr, CARD_OE,
+ SD_OUTPUT_EN, SD_OUTPUT_EN);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int sd_power_off(struct realtek_pci_sdmmc *host)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, SD_CLK_EN, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE, SD_OUTPUT_EN, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
+ SD_POWER_MASK | PMOS_STRG_MASK,
+ SD_POWER_OFF | PMOS_STRG_400mA);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
+ LDO3318_PWR_MASK, pcr->rval.ldo_pwr_off);
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ return rtsx_pci_sd_pull_ctl_disable(pcr);
+}
+
+static int sd_set_power_mode(struct realtek_pci_sdmmc *host,
+ unsigned char power_mode)
+{
+ int err;
+
+ if (power_mode == MMC_POWER_OFF)
+ err = sd_power_off(host);
+ else
+ err = sd_power_on(host);
+
+ return err;
+}
+
+static int sd_set_timing(struct realtek_pci_sdmmc *host,
+ unsigned char timing, bool *ddr_mode)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err = 0;
+
+ *ddr_mode = false;
+
+ rtsx_pci_init_cmd(pcr);
+
+ switch (timing) {
+ case MMC_TIMING_UHS_SDR104:
+ case MMC_TIMING_UHS_SDR50:
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1,
+ 0x0C | SD_ASYNC_FIFO_NOT_RST,
+ SD_30_MODE | SD_ASYNC_FIFO_NOT_RST);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL,
+ CLK_LOW_FREQ, CLK_LOW_FREQ);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
+ CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, 0);
+ break;
+
+ case MMC_TIMING_UHS_DDR50:
+ *ddr_mode = true;
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1,
+ 0x0C | SD_ASYNC_FIFO_NOT_RST,
+ SD_DDR_MODE | SD_ASYNC_FIFO_NOT_RST);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL,
+ CLK_LOW_FREQ, CLK_LOW_FREQ);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
+ CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_PUSH_POINT_CTL,
+ DDR_VAR_TX_CMD_DAT, DDR_VAR_TX_CMD_DAT);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL,
+ DDR_VAR_RX_DAT | DDR_VAR_RX_CMD,
+ DDR_VAR_RX_DAT | DDR_VAR_RX_CMD);
+ break;
+
+ case MMC_TIMING_MMC_HS:
+ case MMC_TIMING_SD_HS:
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1,
+ 0x0C, SD_20_MODE);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL,
+ CLK_LOW_FREQ, CLK_LOW_FREQ);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
+ CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_PUSH_POINT_CTL,
+ SD20_TX_SEL_MASK, SD20_TX_14_AHEAD);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL,
+ SD20_RX_SEL_MASK, SD20_RX_14_DELAY);
+ break;
+
+ default:
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ SD_CFG1, 0x0C, SD_20_MODE);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL,
+ CLK_LOW_FREQ, CLK_LOW_FREQ);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
+ CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ SD_PUSH_POINT_CTL, 0xFF, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL,
+ SD20_RX_SEL_MASK, SD20_RX_POS_EDGE);
+ break;
+ }
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+
+ return err;
+}
+
+static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct realtek_pci_sdmmc *host = mmc_priv(mmc);
+ struct rtsx_pcr *pcr = host->pcr;
+ bool vpclk = false, double_clk = true;
+ u8 ssc_depth;
+
+ if (host->eject)
+ return;
+
+ mutex_lock(&pcr->pcr_mutex);
+
+ rtsx_pci_start_run(pcr);
+
+ sd_set_bus_width(host, ios->bus_width);
+ sd_set_power_mode(host, ios->power_mode);
+ sd_set_timing(host, ios->timing, &host->ddr_mode);
+
+ switch (ios->timing) {
+ case MMC_TIMING_UHS_SDR104:
+ case MMC_TIMING_UHS_SDR50:
+ ssc_depth = RTSX_SSC_DEPTH_2M;
+ vpclk = true;
+ double_clk = false;
+ break;
+
+ case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_UHS_SDR25:
+ ssc_depth = RTSX_SSC_DEPTH_1M;
+ break;
+
+ default:
+ ssc_depth = RTSX_SSC_DEPTH_500K;
+ break;
+ }
+
+ if (ios->clock <= 1000000)
+ host->initial_mode = true;
+ else
+ host->initial_mode = false;
+
+ rtsx_pci_switch_clock(pcr, ios->clock, ssc_depth,
+ host->initial_mode, double_clk, vpclk);
+
+ mutex_unlock(&pcr->pcr_mutex);
+}
+
+static int sdmmc_get_ro(struct mmc_host *mmc)
+{
+ struct realtek_pci_sdmmc *host = mmc_priv(mmc);
+ struct rtsx_pcr *pcr = host->pcr;
+ int ro = 0;
+ u32 val;
+
+ if (host->eject)
+ return -ENOMEDIUM;
+
+ mutex_lock(&pcr->pcr_mutex);
+
+ rtsx_pci_start_run(pcr);
+
+ /* Check SD Machanical Write-Protect Switch */
+ val = rtsx_pci_readl(pcr, RTSX_BIPR);
+ dev_dbg(sdmmc_dev(host), "%s: RTSX_BIPR = 0x%08x\n", __func__, val);
+ if (val & SD_WRITE_PROTECT)
+ ro = 1;
+
+ mutex_unlock(&pcr->pcr_mutex);
+
+ return ro;
+}
+
+static int sdmmc_get_cd(struct mmc_host *mmc)
+{
+ struct realtek_pci_sdmmc *host = mmc_priv(mmc);
+ struct rtsx_pcr *pcr = host->pcr;
+ int cd = 0;
+ u32 val;
+
+ if (host->eject)
+ return -ENOMEDIUM;
+
+ mutex_lock(&pcr->pcr_mutex);
+
+ rtsx_pci_start_run(pcr);
+
+ /* Check SD Machanical Write-Protect Switch */
+ val = rtsx_pci_readl(pcr, RTSX_BIPR);
+ dev_dbg(sdmmc_dev(host), "%s: RTSX_BIPR = 0x%08x\n", __func__, val);
+ if (val & SD_EXIST)
+ cd = 1;
+
+ mutex_unlock(&pcr->pcr_mutex);
+
+ return cd;
+}
+
+static int sd_wait_voltage_stable_1(struct realtek_pci_sdmmc *host)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+ u8 stat;
+
+ /* Reference to Signal Voltage Switch Sequence in SD spec.
+ * Wait for a period of time so that the card can drive SD_CMD and
+ * SD_DAT[3:0] to low after sending back CMD11 response.
+ */
+ mdelay(1);
+
+ /* SD_CMD, SD_DAT[3:0] should be driven to low by card;
+ * If either one of SD_CMD,SD_DAT[3:0] is not low,
+ * abort the voltage switch sequence;
+ */
+ err = rtsx_pci_read_register(pcr, SD_BUS_STAT, &stat);
+ if (err < 0)
+ return err;
+
+ if (stat & (SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS |
+ SD_DAT1_STATUS | SD_DAT0_STATUS))
+ return -EINVAL;
+
+ /* Stop toggle SD clock */
+ err = rtsx_pci_write_register(pcr, SD_BUS_STAT,
+ 0xFF, SD_CLK_FORCE_STOP);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int sd_wait_voltage_stable_2(struct realtek_pci_sdmmc *host)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+ u8 stat, mask, val;
+
+ /* Wait 1.8V output of voltage regulator in card stable */
+ msleep(50);
+
+ /* Toggle SD clock again */
+ err = rtsx_pci_write_register(pcr, SD_BUS_STAT,
+ 0xFF, SD_CLK_TOGGLE_EN);
+ if (err < 0)
+ return err;
+
+ /* Wait for a period of time so that the card can drive
+ * SD_DAT[3:0] to high at 1.8V
+ */
+ msleep(20);
+
+ /* SD_CMD, SD_DAT[3:0] should be pulled high by host */
+ err = rtsx_pci_read_register(pcr, SD_BUS_STAT, &stat);
+ if (err < 0)
+ return err;
+
+ mask = SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS |
+ SD_DAT1_STATUS | SD_DAT0_STATUS;
+ val = SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS |
+ SD_DAT1_STATUS | SD_DAT0_STATUS;
+ if ((stat & mask) != val) {
+ dev_dbg(sdmmc_dev(host),
+ "%s: SD_BUS_STAT = 0x%x\n", __func__, stat);
+ rtsx_pci_write_register(pcr, SD_BUS_STAT,
+ SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0);
+ rtsx_pci_write_register(pcr, CARD_CLK_EN, 0xFF, 0);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int sd_change_bank_voltage(struct realtek_pci_sdmmc *host, u8 voltage)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+
+ if (voltage == SD_IO_3V3) {
+ err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24);
+ if (err < 0)
+ return err;
+ } else if (voltage == SD_IO_1V8) {
+ err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C40 | 0x24);
+ if (err < 0)
+ return err;
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct realtek_pci_sdmmc *host = mmc_priv(mmc);
+ struct rtsx_pcr *pcr = host->pcr;
+ int err = 0;
+ u8 voltage;
+
+ dev_dbg(sdmmc_dev(host), "%s: signal_voltage = %d\n",
+ __func__, ios->signal_voltage);
+
+ if (host->eject)
+ return -ENOMEDIUM;
+
+ mutex_lock(&pcr->pcr_mutex);
+
+ rtsx_pci_start_run(pcr);
+
+ if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330)
+ voltage = SD_IO_3V3;
+ else
+ voltage = SD_IO_1V8;
+
+ if (voltage == SD_IO_1V8) {
+ err = rtsx_pci_write_register(pcr,
+ SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B);
+ if (err < 0)
+ goto out;
+
+ err = sd_wait_voltage_stable_1(host);
+ if (err < 0)
+ goto out;
+ }
+
+ err = sd_change_bank_voltage(host, voltage);
+ if (err < 0)
+ goto out;
+
+ if (voltage == SD_IO_1V8) {
+ err = sd_wait_voltage_stable_2(host);
+ if (err < 0)
+ goto out;
+ }
+
+ /* Stop toggle SD clock in idle */
+ err = rtsx_pci_write_register(pcr, SD_BUS_STAT,
+ SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0);
+
+out:
+ mutex_unlock(&pcr->pcr_mutex);
+
+ return err;
+}
+
+static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
+{
+ struct realtek_pci_sdmmc *host = mmc_priv(mmc);
+ struct rtsx_pcr *pcr = host->pcr;
+ int err = 0;
+
+ if (host->eject)
+ return -ENOMEDIUM;
+
+ mutex_lock(&pcr->pcr_mutex);
+
+ rtsx_pci_start_run(pcr);
+
+ if (!host->ddr_mode)
+ err = sd_tuning_rx(host, MMC_SEND_TUNING_BLOCK);
+
+ mutex_unlock(&pcr->pcr_mutex);
+
+ return err;
+}
+
+static const struct mmc_host_ops realtek_pci_sdmmc_ops = {
+ .request = sdmmc_request,
+ .set_ios = sdmmc_set_ios,
+ .get_ro = sdmmc_get_ro,
+ .get_cd = sdmmc_get_cd,
+ .start_signal_voltage_switch = sdmmc_switch_voltage,
+ .execute_tuning = sdmmc_execute_tuning,
+};
+
+static void init_extra_caps(struct realtek_pci_sdmmc *host)
+{
+ struct mmc_host *mmc = host->mmc;
+ struct rtsx_pcr *pcr = host->pcr;
+
+ dev_dbg(sdmmc_dev(host), "pcr->extra_caps = 0x%x\n",
+ pcr->extra_caps);
+
+ if (pcr->extra_caps & EXTRA_CAPS_SD_SDR50)
+ mmc->caps |= MMC_CAP_UHS_SDR50;
+ if (pcr->extra_caps & EXTRA_CAPS_SD_SDR104)
+ mmc->caps |= MMC_CAP_UHS_SDR104;
+ if (pcr->extra_caps & EXTRA_CAPS_SD_DDR50)
+ mmc->caps |= MMC_CAP_UHS_DDR50;
+ if (pcr->extra_caps & EXTRA_CAPS_MMC_HSDDR)
+ mmc->caps |= MMC_CAP_1_8V_DDR;
+ if (pcr->extra_caps & EXTRA_CAPS_MMC_8BIT)
+ mmc->caps |= MMC_CAP_8_BIT_DATA;
+}
+
+static void realtek_init_host(struct realtek_pci_sdmmc *host)
+{
+ struct mmc_host *mmc = host->mmc;
+
+ mmc->f_min = 250000;
+ mmc->f_max = 208000000;
+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
+ mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED |
+ MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST |
+ MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25;
+ mmc->max_current_330 = 400;
+ mmc->max_current_180 = 800;
+ mmc->ops = &realtek_pci_sdmmc_ops;
+
+ init_extra_caps(host);
+
+ mmc->max_segs = 256;
+ mmc->max_blk_size = RTSX_MAX_BLOCK_LENGTH;
+ mmc->max_blk_count = RTSX_MAX_BLOCK_COUNT;
+ mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count;
+ mmc->max_req_size = mmc->max_seg_size;
+}
+
+static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
+{
+ struct mmc_host *mmc;
+ struct realtek_pci_sdmmc *host;
+ struct rtsx_pcr *pcr = platform_get_drvdata(pdev);
+
+ dev_dbg(&(pdev->dev),
+ ": Realtek PCI-E SDMMC controller found\n");
+
+ if (!pcr)
+ return -ENXIO;
+
+ mmc = mmc_alloc_host(sizeof(*host), &pcr->pci->dev);
+ if (!mmc)
+ return -ENOMEM;
+
+ host = mmc_priv(mmc);
+ host->pcr = pcr;
+ host->mmc = mmc;
+ host->pdev = pdev;
+ platform_set_drvdata(pdev, host);
+
+ mutex_init(&host->host_mutex);
+
+ realtek_init_host(host);
+
+ mmc_add_host(mmc);
+
+ return 0;
+}
+
+static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
+{
+ struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev);
+ struct rtsx_pcr *pcr;
+ struct mmc_host *mmc;
+
+ if (!host)
+ return 0;
+
+ pcr = host->pcr;
+ mmc = host->mmc;
+ host->eject = true;
+
+ mutex_lock(&host->host_mutex);
+ if (host->mrq) {
+ dev_dbg(&(pdev->dev),
+ "%s: Controller removed during transfer\n",
+ mmc_hostname(mmc));
+
+ rtsx_pci_complete_unfinished_transfer(pcr);
+
+ host->mrq->cmd->error = -ENOMEDIUM;
+ if (host->mrq->stop)
+ host->mrq->stop->error = -ENOMEDIUM;
+ mmc_request_done(mmc, host->mrq);
+ }
+ mutex_unlock(&host->host_mutex);
+
+ mmc_remove_host(mmc);
+ mmc_free_host(mmc);
+
+ platform_set_drvdata(pdev, NULL);
+
+ dev_dbg(&(pdev->dev),
+ ": Realtek PCI-E SDMMC controller has been removed\n");
+
+ return 0;
+}
+
+static struct platform_device_id rtsx_pci_sdmmc_ids[] = {
+ {
+ .name = DRV_NAME_RTSX_PCI_SDMMC,
+ }, {
+ /* sentinel */
+ }
+};
+MODULE_DEVICE_TABLE(platform, rtsx_pci_sdmmc_ids);
+
+static struct platform_driver rtsx_pci_sdmmc_driver = {
+ .probe = rtsx_pci_sdmmc_drv_probe,
+ .remove = rtsx_pci_sdmmc_drv_remove,
+ .id_table = rtsx_pci_sdmmc_ids,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRV_NAME_RTSX_PCI_SDMMC,
+ },
+};
+
+static int __init realtek_pci_sdmmc_drv_init(void)
+{
+ return platform_driver_register(&rtsx_pci_sdmmc_driver);
+}
+
+static void __exit realtek_pci_sdmmc_drv_exit(void)
+{
+ platform_driver_unregister(&rtsx_pci_sdmmc_driver);
+}
+
+module_init(realtek_pci_sdmmc_drv_init);
+module_exit(realtek_pci_sdmmc_drv_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Realtek Corp.");
+MODULE_DESCRIPTION("Realtek PCI-E SD/MMC Card Host Driver");
--
1.7.9.5
^ permalink raw reply related [flat|nested] 7+ messages in thread